202
Chess Puzzles 2401-2500 Mate in Two White to Move L´ aszl´oPolg´ ar
Chess Puzzles2401-2500
Mate in TwoWhite to Move
Laszlo Polgar
Links
2401 2402 2403 2404 2405 2406 2407 2408 2409 24102411 2412 2413 2414 2415 2416 2417 2418 2419 24202421 2422 2423 2424 2425 2426 2427 2428 2429 24302431 2432 2433 2434 2435 2436 2437 2438 2439 24402441 2442 2443 2444 2445 2446 2447 2448 2449 24502451 2452 2453 2454 2455 2456 2457 2458 2459 24602461 2462 2463 2464 2465 2466 2467 2468 2469 24702471 2472 2473 2474 2475 2476 2477 2478 2479 24802481 2482 2483 2484 2485 2486 2487 2488 2489 24902491 2492 2493 2494 2495 2496 2497 2498 2499 2500
2401
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0J0o0Z00Z0ZpZ0ZZ0ZkM0Z00Z0Z0L0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
L. Merenye, 1926
2401
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0o0Z00J0ZpZ0ZZ0ZkM0Z00Z0Z0L0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Kb6, Kd6Qd4
2402
8
7
6
5
4
3
2
1
QZ0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0ZpZ0ZZ0Z0ZpZK0Z0Z0Z0ZS0Z0Z0lk
a b c d e f g h
L. Merenye, 1926
2402
8
7
6
5
4
3
2
1
0L0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0ZpZ0ZZ0Z0ZpZK0Z0Z0Z0ZS0Z0Z0lk
a b c d e f g h
Qb8If Qf1+, RXf1.Otherwise, Qh2.
2403
8
7
6
5
4
3
2
1
0ZKZ0Z0ZZ0Z0Z0Z00Z0jNO0ZZ0Z0ZQZ00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
L. Merenye, 1926
2403
8
7
6
5
4
3
2
1
0ZKZ0Z0ZZ0Z0ZPZ00Z0jNZ0ZZ0Z0ZQZ00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pf7If Kc6, Qc5. If Ke7, pf8(Q).
2404
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZQZ0Z00Z0O0Z0ZMpZ0Z0Z0kZ0Z0Z0ZZ0J0Z0Z00Z0Z0Z0ZZNZ0Z0Z0
a b c d e f g h
L. Merenye, 1926
2404
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZQZ0Z0Z00Z0O0Z0ZMpZ0Z0Z0kZ0Z0Z0ZZ0J0Z0Z00Z0Z0Z0ZZNZ0Z0Z0
a b c d e f g h
Qb7If pb4+, QXb4. If KXa5, Qa7.
2405
8
7
6
5
4
3
2
1
0Z0Z0ZKZZ0Z0Z0L00Z0Z0Z0ZZBZ0Z0Z00Z0ZkZ0ZZ0Z0O0Z00Z0Z0ZPZZ0Z0A0Z0
a b c d e f g h
V. Metlitzky, 1969
2405
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0ZKL00Z0Z0Z0ZZBZ0Z0Z00Z0ZkZ0ZZ0Z0O0Z00Z0Z0ZPZZ0Z0A0Z0
a b c d e f g h
Kf7If KXe3, Qe5. If Kd5, Qd4. If Kf5, Bd3.
2406
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZKZ0Z0ZZ0Z0Z0Z00Z0ZkZBAZ0ZpZ0Z00Z0Z0Z0LZ0ZNZ0Z0
a b c d e f g h
V. Metlitzky, 1972/73
2406
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZKZ0Z0ZZ0Z0Z0Z00Z0ZkZBAZ0ZpZ0Z00Z0L0Z0ZZ0ZNZ0Z0
a b c d e f g h
Qd2If Kd4, Qf4. If Ke5, Qe3.
2407
8
7
6
5
4
3
2
1
0M0Z0Z0ZZ0Z0A0J00Z0Z0Z0ZZ0Z0j0Z00Z0Z0o0ZZ0Z0Z0ZQ0Z0ZBZ0ZZ0Z0Z0Z0
a b c d e f g h
V. Metlitzky, 1967
2407
8
7
6
5
4
3
2
1
0M0Z0Z0ZZ0Z0A0J00Z0Z0Z0ZZ0Z0j0Z00Z0Z0o0ZZ0Z0ZQZ00Z0ZBZ0ZZ0Z0Z0Z0
a b c d e f g h
Qf3If Kd4, Nc6. If Kd6, Qe4. If Kf5, Qd5.
2408
8
7
6
5
4
3
2
1
0Z0ZKZ0AZ0Z0ZpZ00Z0Z0ZPjZ0Z0ZQZ00Z0Z0Z0ZZ0Z0Z0Z0bZ0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
F. M. Mihalek, 1979
2408
8
7
6
5
4
3
2
1
0Z0ZKZ0ZZ0Z0ZpZ00Z0Z0APjZ0Z0ZQZ00Z0Z0Z0ZZ0Z0Z0Z0bZ0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Bf6If pXg6, Qh3.Otherswise, Qg5.
2409
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0ZpM0ZZ0Z0Z0Z00Z0Z0Z0ZZ0L0ZNZ00Z0Z0ZkZZ0Z0J0ZR
a b c d e f g h
A. Mihailov, 1983
2409
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0ZpM0ZZ0Z0L0Z00Z0Z0Z0ZZ0Z0ZNZ00Z0Z0ZkZZ0Z0J0ZR
a b c d e f g h
Qe5If KXh1, Qh2. If KXf3, O-O.
2410
8
7
6
5
4
3
2
1
0ZNZ0Z0ZZ0Z0Z0j00ZQZ0Z0ZZ0Z0Z0M00Z0S0ZKZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
J. Minckwitz, 1875
2410
8
7
6
5
4
3
2
1
0ZNZ0Z0ZZ0Z0Z0j00Z0Z0Z0ZZ0Z0Z0M00Z0S0ZKZZ0L0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qc3If Kf6-h6, Rd6. If Kf8-h8, Rd8.
2411
8
7
6
5
4
3
2
1
0Z0Z0Z0ZL0O0Z0Z00Z0ZPZ0ZZkZ0J0Z00Z0Z0Z0ZZ0Z0Z0Z0NZ0Z0Z0ZM0Z0Z0Z0
a b c d e f g h
A. Mironov, 1982
2411
8
7
6
5
4
3
2
1
0ZBZ0Z0ZL0Z0Z0Z00Z0ZPZ0ZZkZ0J0Z00Z0Z0Z0ZZ0Z0Z0Z0NZ0Z0Z0ZM0Z0Z0Z0
a b c d e f g h
pc8(B)If Kc6, Bd7. If Kc4, Ba6.
2412
8
7
6
5
4
3
2
1
0Z0Z0Z0ZL0Z0Z0Z00Z0ZPZ0ZZkZ0O0Z00Z0ZKZ0ZZ0Z0Z0Z0NZ0Z0Z0ZM0Z0Z0Z0
a b c d e f g h
A. Mironov, 1982
2412
8
7
6
5
4
3
2
1
0Z0Z0Z0ZL0Z0Z0Z00Z0ZPZ0ZZkZ0O0Z00Z0ZKZ0ZZNZ0Z0Z0NZ0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Nb3If Kc6, Nd4. If Kc4, Qa4.
2413
8
7
6
5
4
3
2
1
0Z0Z0Z0ZL0O0Z0Z00Z0ZPZ0ZZkZ0Z0Z00Z0ZKZ0ZZ0Z0Z0Z0NZ0Z0Z0ZM0Z0Z0Z0
a b c d e f g h
A. Mironov, 1982
2413
8
7
6
5
4
3
2
1
0ZNZ0Z0ZL0Z0Z0Z00Z0ZPZ0ZZkZ0Z0Z00Z0ZKZ0ZZ0Z0Z0Z0NZ0Z0Z0ZM0Z0Z0Z0
a b c d e f g h
pc8(N)If Kc6, Qb6. If Kc4, Nd6.
2414
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0A0Z0jP0Z0Z0Z0ZZ0Z0Z0O00Z0Z0Z0JZ0Z0Z0Z0
a b c d e f g h
A. Miskolczy, 1911
2414
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0A0Z0jP0Z0Z0ZPZZ0Z0Z0Z00Z0Z0Z0JZ0Z0Z0Z0
a b c d e f g h
pg4If Kf4, Qf5. If Kf6, Qe7. If Kh4, Be7. If Kh6, Be3.
2415
8
7
6
5
4
3
2
1
0Z0Z0s0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0j00L0Z0Z0SAKZBZ0Z0
a b c d e f g h
W. Moykin, 1973
2415
8
7
6
5
4
3
2
1
0Z0Z0s0LZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0j00Z0Z0Z0SAKZBZ0Z0
a b c d e f g h
Qh8If RXh8, Be5. If Rb8+, QXb8. If Rf4, Qh3. If Kf4, Qe5.Otherwise, Qh4.
2416
8
7
6
5
4
3
2
1
0S0Z0Z0ZZ0j0Z0Z00Z0Z0Z0sZ0Z0Z0Z0BZ0Z0Z0ZZ0Z0Z0Z0KL0Z0Z0ZA0Z0Z0Z0
a b c d e f g h
V. Moykin, 1973
2416
8
7
6
5
4
3
2
1
0S0Z0Z0LZ0j0Z0Z00Z0Z0Z0sZ0Z0Z0Z0BZ0Z0Z0ZZ0Z0Z0Z0KZ0Z0Z0ZA0Z0Z0Z0
a b c d e f g h
Qh8If RXh8, Be5. If Rh2+, QXh2. If Rd6, Qc8. If Kd6, Qe5.Otherwise, Qd8.
2417
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Zp0Z0ZQZ0ZZ0Z0Z0j00Z0Z0Z0ZZ0Z0J0Z00Z0Z0ZNZZ0ZBZ0Z0
a b c d e f g h
E. Montvid, 1893
2417
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Zp0Z0ZQZ0ZZ0Z0Z0j00Z0Z0Z0MZ0Z0J0Z00Z0Z0Z0ZZ0ZBZ0Z0
a b c d e f g h
Nh4If KXh4, Qg4. If ph6 or ph5, Nf3.
2418
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0oZ0Z0o0Z00Z0ZkZ0JZ0Z0Z0ZB0Z0L0Z0ZZ0Z0Z0M0
a b c d e f g h
E. Montvid, 1901
2418
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0oZ0Z0o0Z00Z0ZkZ0JZ0Z0ZNZB0Z0L0Z0ZZ0Z0Z0Z0
a b c d e f g h
Nf3If KXf3, Bg2. If ph5, Ng5.
2419
8
7
6
5
4
3
2
1
0M0Z0Z0ZZnZ0J0Z00o0Z0Z0ZZ0ZkZ0Z00Z0O0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
E. Montvid, 1901
2419
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZnZ0J0Z0No0Z0Z0ZZ0ZkZ0Z00Z0O0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Na6If Kc6, pd5.Otherwise, Nb4.
2420
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00APjNZ0ZZ0Z0Z0Z00ZBZ0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
G. Mosiashvili, 1982
2420
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00APjNZQZZ0Z0Z0Z00ZBZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qg6If KXc6, Nc5. If Ke5, Be7. If Ke7, Be5.
2421
8
7
6
5
4
3
2
1
0Z0S0Z0ZZ0Z0Z0Z00Z0ZNj0ZZ0Z0M0Z00Z0Z0Z0ZZ0Z0J0ZQ0Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
J. Mostert, 1960
2421
8
7
6
5
4
3
2
1
0Z0S0Z0ZZ0Z0Z0Z00Z0Z0j0ZZ0M0M0Z00Z0Z0Z0ZZ0Z0J0ZQ0Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Nc5If KXe5, Qe6. If Ke7, Qh4. If Kg7, Qh8. If Kg5, Ne4.
2422
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00J0A0Z0ZZ0Z0Z0Z0kZ0ZNZ0ZZ0S0Z0Z00ZnZ0Z0Zm0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1937
2422
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00J0A0Z0ZZ0Z0Z0Z0kZ0ZNZ0ZZ0ZRZ0Z00ZnZ0Z0Zm0Z0Z0Z0
a b c d e f g h
Rd3If Nb3, Nc3. If Nb4, Nc5.If Na3, RXa3. Otherwise, Ra3.
2423
8
7
6
5
4
3
2
1
RZ0Z0Z0ZakZ0Z0Z00ZRo0Z0ZZ0Z0Z0Z0KZ0Z0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1942
2423
8
7
6
5
4
3
2
1
RZ0Z0Z0ZakZ0Z0Z0RZ0o0Z0ZZ0Z0Z0Z0KZ0Z0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
Ra6If KXa8, Qc8. If Bc5, Qh7.Otherwise, Qc6.
2424
8
7
6
5
4
3
2
1
0Z0Z0Z0JZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0o0LZ0Z0Z0Z00Z0Z0Z0MZ0Z0ZBjr
a b c d e f g h
G. Mott-Smith, 1937
2424
8
7
6
5
4
3
2
1
0Z0Z0Z0JZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0o0ZZ0Z0Z0Z00Z0Z0Z0MZ0Z0LBjr
a b c d e f g h
Qe1If RXh2+, Bh3. If KXh2, Qf2. If pf3, Qg3.
2425
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0l0Z0Z0QZ0Z0Z0ZZ0j0M0Z00Z0Z0Z0ZJ0ZRZ0Z0
a b c d e f g h
G. Mott-Smith, 1939
2425
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0l0Z0Z0QZ0Z0Z0ZZ0j0M0Z0KZ0Z0Z0ZZ0ZRZ0Z0
a b c d e f g h
Ka2If Qa3+, QXa3. If Qc4+, QXc4. If Qd5+, NXd5. If Qa5, QXa5.If Qb4, Qc2. If Qb5, Qd4. If Qb6 or Qa7, Nd5. Otherwise, Qb3.
2426
8
7
6
5
4
3
2
1
kZ0Z0Z0ZZ0ZNZ0Z0KO0ZrZ0ZL0Z0Z0Z00Z0m0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1932
2426
8
7
6
5
4
3
2
1
kZ0Z0Z0ZZ0ZNZ0Z0KO0ZrZ0ZZ0Z0L0Z00Z0m0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qe5If RXb6+, NXb6. If RXe5 or Nc6 or Re8, pb7. If Rd6, Qe8.Otherwise, Qb8.
2427
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00J0Z0Z0ZZ0ZkM0Z00Z0ZNZQZZ0ObZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1937
2427
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00J0Z0Z0ZZ0ZkZ0Z00ZNZNZQZZ0ObZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Nc4If BXc4, Qf5. If BXe4 or KXc4, Qg8.Otherwise, Nf6.
2428
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZBo0Z00Z0O0Z0ZZ0ZkZ0J00Z0Z0Z0ZZ0L0Z0Z00Z0Z0M0ZZ0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1937
2428
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZBo0Z00Z0O0Z0ZZ0ZkZ0J00Z0ZNZ0ZZ0L0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Ne4If KXe4 or pe6, Bc6. If pXd6, Nf6. If pe5, Qd3.
2429
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZKZ0Z0a00Z0Z0Z0ZZ0ZkZ0Z00Z0Z0ZNZA0O0Z0Z00Z0ZQZ0ZZ0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1934
2429
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZKZ0Z0a00Z0Z0Z0ZZ0ZkZ0Z00Z0Z0Z0ZA0O0Z0Z00Z0ZQM0ZZ0Z0Z0Z0
a b c d e f g h
Nf2If Bd4, pc4. If Be5, Qa2.Otherwise, Qe4.
2430
8
7
6
5
4
3
2
1
0Z0Z0j0AZ0ZKaPZ00Z0ZRZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0L0ZZ0Z0Z0Z0
a b c d e f g h
G. Mott-Smith, 1937
2430
8
7
6
5
4
3
2
1
0Z0Z0j0AZ0ZKaPZ00Z0ZRZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0QZ0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qa2If KXf7, Rf6.Otherwise, Re8.
2431
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0A0Z00Z0ZBZ0ZZ0Z0j0Z00Z0ZpZ0ZZQZ0Z0Z00Z0Z0Z0ZZ0Z0J0Z0
a b c d e f g h
J. Miller, 1914
2431
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0A0Z00Z0ZBZ0ZZ0Z0j0Z00Z0ZpZ0ZZQZ0Z0Z00Z0ZKZ0ZZ0Z0Z0Z0
a b c d e f g h
Kf2If Kd4, Qb2. If Kf4, Qb8. If pe3, QXe3.
2432
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZJ0Z0Z0Z00Z0Z0L0ZS0Z0Z0Z0nj0Z0Z0OZ0ZRZ0Z0
a b c d e f g h
I. Murarasu, 1988
2432
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZJ0Z0Z0Z00Z0Z0L0ZS0Z0Z0Z0nj0Z0Z0OS0Z0Z0Z0
a b c d e f g h
Ra1If KXa3, Qb4.If Nc1, QXc1. Otherwise, Qc1.
2433
8
7
6
5
4
3
2
1
0ZRZ0Z0JZ0Z0Z0Z00Z0M0Z0ZZQZ0Z0Z00Z0j0Z0ZZ0Z0a0Z00Z0Z0Z0ZZnZ0Z0Z0
a b c d e f g h
M. Myllyniemi, 1954
2433
8
7
6
5
4
3
2
1
0ZRZ0Z0JZ0Z0Z0Z00Z0M0Z0ZZ0Z0ZQZ00Z0j0Z0ZZ0Z0a0Z00Z0Z0Z0ZZnZ0Z0Z0
a b c d e f g h
Qf5If Nd2, Nb5. If Nc3, Rc4.Otherwise, Qe4.
2434
8
7
6
5
4
3
2
1
0Z0Z0J0ZZ0Z0Z0Z00Z0Z0Z0Zm0Z0Z0Z00Z0Z0Z0ZLbZ0Z0Z0BZ0Z0Z0Zj0M0Z0Z0
a b c d e f g h
E. Myhre, 1928
2434
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0J00Z0Z0Z0Zm0Z0Z0Z00Z0Z0Z0ZLbZ0Z0Z0BZ0Z0Z0Zj0M0Z0Z0
a b c d e f g h
Kg7If BXa2, QXa2. If Nc4 or Nc6 or Nb7, NXb3.Otherwise, Qc3.
2435
8
7
6
5
4
3
2
1
0Z0ZKZ0ZZ0Z0Z0Z00Z0okZ0ZZ0Z0O0Z00Z0Z0Z0ZZ0Z0ZBL00Z0Z0Z0Za0Z0Z0Z0
a b c d e f g h
M. Myllyniemi, 1981
2435
8
7
6
5
4
3
2
1
0Z0ZKZ0ZZ0Z0Z0L00Z0okZ0ZZ0Z0O0Z00Z0Z0Z0ZZ0Z0ZBZ00Z0Z0Z0Za0Z0Z0Z0
a b c d e f g h
Qg7If pXe5, Qg6. If BXe5, Qf7.Otherwise, Qf6.
2436
8
7
6
5
4
3
2
1
RZ0Z0Z0ZZ0Z0Z0ZB0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZNZ0Z0Z00o0o0Z0ZZ0ZkZKZ0
a b c d e f g h
M. Myllyniemi, 1970/71
2436
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0ZB0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZNZ0Z0Z0Ro0o0Z0ZZ0ZkZKZ0
a b c d e f g h
Ra2If pb1(Q), RXd2. If pb1(N), Bc2.
2437
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0KL0Z0Z0Za0ZNZ0Z00ZkZ0M0ZZ0Z0Z0Z0
a b c d e f g h
M. Myllyniemi, 1965
2437
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0KZ0Z0Z0Za0ZNZ0Z00ZkZ0M0ZZ0Z0L0Z0
a b c d e f g h
Qd1If Bb2, Qd1. If Bc1, QXc1. If Bb4-f8, Qc1.
2438
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00s0Z0Z0Za0L0Z0Z0kZ0Z0Z0ZZ0Z0Z0Z0KZNZ0Z0ZZ0ZNZ0Z0
a b c d e f g h
M. Myllyniemi, 1957
2438
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00s0Z0Z0Za0L0Z0Z0kM0Z0Z0ZZ0Z0Z0Z0KZ0Z0Z0ZZ0ZNZ0Z0
a b c d e f g h
Nb4If BXb4, Nb2. Otherwise, Nc3.
2439
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0LpZn0Z0Z0ZkZZ0Z0ZNZ00Z0Z0J0ZZ0Z0Z0Z0
a b c d e f g h
N. Nadezhdin, 1969
2439
8
7
6
5
4
3
2
1
0Z0Z0Z0LZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZpZn0Z0Z0ZkZZ0Z0ZNZ00Z0Z0J0ZZ0Z0Z0Z0
a b c d e f g h
Qh8If pf4, Qd8. If Kf4, Qd4. If Kh3, QXh5.Otherwise, Qh4.
2440
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZKZ00Z0Z0Z0MaRZ0Z0Z00Z0ZkZ0ZZ0Z0A0ZQ
a b c d e f g h
E. Nogovitzin, 1974
2440
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZKZ00Z0Z0Z0MaRA0Z0Z00Z0ZkZ0ZZ0Z0Z0ZQ
a b c d e f g h
Bc3If Kf2, Qe1. If Kd3, Qe4.Otherwise, Qf3.
2441
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZkA0Z0Z00O0Z0Z0ZZ0ZKZ0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZBZ0
a b c d e f g h
B. Nazarov, 1982
2441
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZkA0Z0Z00O0J0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZBZ0
a b c d e f g h
Kd6If Ka8, Bg2. If Kc8, Ba6.
2442
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZkA0Z0Z00O0Z0Z0ZZ0ZKZ0Z00Z0ZNZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZBZ0
a b c d e f g h
B. Nazarov, 1982
2442
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZkA0Z0Z00O0Z0Z0ZZBZKZ0Z00Z0ZNZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Bb5If Ka8, Bc6. If Kc8, Nd6.
2443
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0ZR0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0JZ0Z0ZpLB0Z0Z0Z0mZ0Z0Z0Zk
a b c d e f g h
V. Negodayev, 1971
2443
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0ZR0Z0Z0Z0ZZ0Z0Z0J00Z0Z0Z0ZZ0Z0ZpLB0Z0Z0Z0mZ0Z0Z0Zk
a b c d e f g h
Kg5If pf2, Qg2. If Nf1, BXf1. If Ng4, BXg4.
2444
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0kZKZ0Z0LZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00o0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
O. Nemo, 1929
2444
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0kZKZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0L0Z00o0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qe3If pb1(Q) or Ka5, Qa3. If pb1(N), Qb6.
2445
8
7
6
5
4
3
2
1
0Z0Z0ZBZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0J0Z00Z0Z0Z0ZZnZNZ0Z00Z0Z0Z0ZjbZ0Z0ZQ
a b c d e f g h
V. Nestorescu, 1959
2445
8
7
6
5
4
3
2
1
0Z0Z0ZBZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0J0Z00Z0Z0Z0ZZnZNZ0Z00Z0Z0Z0ZjbZ0Z0L0
a b c d e f g h
Qg1If Ka2, Qa7.If Nd4, QXd4. Otherwise, Qd4.
2446
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0Qo0Z0Z0ZZ0Z0Z0Z00j0J0Z0ZZ0Z0o0Z00Z0ZPZ0ZZ0A0Z0Z0
a b c d e f g h
Gy. Neukomm, 1928
2446
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0Qo0Z0Z0ZZ0ZKZ0Z00j0Z0Z0ZZ0Z0o0Z00Z0ZPZ0ZZ0A0Z0Z0
a b c d e f g h
Kd5If pb5, Qa3. If Kb3 or Kc3, Qc4.
2447
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0J0ZZPZ0Z0Z00Z0ZkZ0ZZPO0Z0L00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1929
2447
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0J0ZZPZ0Z0Z00O0ZkZ0ZZ0O0Z0L00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pb4, Kd5Qd3
2448
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0Zo0ZQZ0Z0NZ0Z0Z0ZZ0Z0Z0Z00ZkZ0Z0ZZ0ZRm0ZK
a b c d e f g h
Gy. Neukomm, 1930
2448
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0Zo0MQZ0Z00Z0Z0Z0ZZ0Z0Z0Z00ZkZ0Z0ZZ0ZRm0ZK
a b c d e f g h
Nc5If pa4, Qd2.Otherwise, Qb3.
2449
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00o0Z0Z0ZZKZ0Z0Z00Z0o0ZNZZ0ZkZ0MR
a b c d e f g h
Gy. Neukomm, 1931
2449
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00o0Z0M0ZZKZ0Z0Z00Z0o0Z0ZZ0ZkZ0MR
a b c d e f g h
Nf4If Kc1, N(g1) e2. If Ke1, N(g1) h3.
2450
8
7
6
5
4
3
2
1
KZ0Z0Z0ZmQZ0Z0Z00Z0Z0Z0ZZ0j0O0Z00Z0o0Z0ZZ0ZBZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1931
2450
8
7
6
5
4
3
2
1
KL0Z0Z0Zm0Z0Z0Z00Z0Z0Z0ZZ0j0O0Z00Z0o0Z0ZZ0ZBZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qb8If Kc6 or Kd5, Qd6.If Nb5, QXb5. Otherwise, Qb5.
2451
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZBo0ZKZZ0ZNj0Z00Z0ZnZ0ZZ0Z0L0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1927
2451
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0ZKZ00ZBo0Z0ZZ0ZNj0Z00Z0ZnZ0ZZ0Z0L0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Kf7, Kf5Qf4
2452
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0A0j0Z00ZnZ0ZpZZ0Z0Z0M00Z0Z0J0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1931
2452
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0Z0j0Z00AnZ0ZpZZ0Z0Z0M00Z0Z0J0ZZ0Z0Z0Z0
a b c d e f g h
Bb4If Kd4, Qe4. If Kf4, Qf6.If Nd6, QXd6. Otherwise, Qd6.
2453
8
7
6
5
4
3
2
1
0JNZ0Z0ZZ0ZNO0Z00ZkZ0Z0ZZ0Z0ZPZ00ZBZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1928
2453
8
7
6
5
4
3
2
1
0JNZRZ0ZZ0ZNZ0Z00ZkZ0Z0ZZ0Z0ZPZ00ZBZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pe8(R), KXd7Bb5.
2454
8
7
6
5
4
3
2
1
0Z0Z0ZKZZ0Z0APO00Z0ZkZ0ZZ0Z0Z0Z00ZNZ0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1927
2454
8
7
6
5
4
3
2
1
0Z0Z0SKZZ0Z0A0O00Z0ZkZ0ZZ0Z0Z0Z00ZNZ0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pf8(R), KXe7Qd6
2455
8
7
6
5
4
3
2
1
0Z0ZNZ0ZZ0Z0j0O00ZBZ0ZKZZ0Z0Z0Z00Z0S0Z0ZZ0Z0O0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1927
2455
8
7
6
5
4
3
2
1
0Z0ZNZRZZ0Z0j0Z00ZBZ0ZKZZ0Z0Z0Z00Z0S0Z0ZZ0Z0O0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pb8(R), Ke6Re4
2456
8
7
6
5
4
3
2
1
0Z0Z0jBZZ0Z0ZNMP0Z0Z0Z0ZZ0Z0ZKA00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1927
2456
8
7
6
5
4
3
2
1
0Z0Z0jBSZ0Z0ZNM00Z0Z0Z0ZZ0Z0ZKA00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
ph8(R), KXg7Bh6
2457
8
7
6
5
4
3
2
1
0Z0Z0ZQMZ0Z0Z0Z00Z0Z0O0ZZ0Z0ZkZ00Z0J0Z0OZ0Z0Z0ZP0Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm, 1947
2457
8
7
6
5
4
3
2
1
0Z0Z0Z0MZ0Z0Z0Z00Z0Z0O0ZZ0Z0ZkZ00Z0J0Z0OZ0Z0Z0ZPQZ0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qa2If KXf6, Qf7. If Kf4, Qf2.
2458
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0ZQ0Z0Z0Z0ZZ0Z0ZKZ00Z0Z0Z0ZZ0ZkZ0Z00SNZ0Z0ZZ0S0Z0Z0
a b c d e f g h
Gy. Neukomm, 1924
2458
8
7
6
5
4
3
2
1
0Z0Z0Z0ZL0Z0Z0Z00Z0Z0Z0ZZ0Z0ZKZ00Z0Z0Z0ZZ0ZkZ0Z00SNZ0Z0ZZ0S0Z0Z0
a b c d e f g h
Qa7If Kc3 or Kc4, Qd4. If Kd2 or Ke2, Qe3.
2459
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0KZ0ZpZ0ZZ0jpL0Z0RZNZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Gy. Neukomm - V. Onitiu, 1932
2459
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0KZ0ZQZ0ZZ0jpZ0Z0RZNZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
QXe6If pXc4, RXc4. If pd4, Qd6. If Kd4, Qe3.
2460
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0Zo0Z0A0Z0PZ0Z0Z0ZLKZkZ0M0
a b c d e f g h
Gy. Neukomm - V. Onitiu, 1929
2460
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0Zo0Z0Z0Z0PZ0Z0A0ZLKZkZ0M0
a b c d e f g h
Bf2, Kd2Qd4
2461
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0LK0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0M0ZZ0Z0ZpZ00Z0Z0Z0ZZ0Z0ZrAk
a b c d e f g h
K. Nielsen, 1959
2461
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0LK0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0ZpZN0Z0Z0Z0ZZ0Z0ZrAk
a b c d e f g h
Nh3If pf2, Qb7. If RXg1, QXg1. If Rf2, NXf2. If Ra1-e1, Nf2.
2462
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0sZ0ZpZ0Z00Z0Z0AQZZ0Z0Z0Zp0Z0Z0Z0ZZ0ZKZ0Zk
a b c d e f g h
K. Nielsen, 1971
2462
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0sZ0ZpZ0Z00Z0Z0ZQZZ0Z0A0Zp0Z0Z0Z0ZZ0ZKZ0Zk
a b c d e f g h
Be3If ph2, Qf3. If Rg6, QXh3.Otherwise, Qg1.
2463
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z0QZ0Z0JNjZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
A. Nieman, 1985
2463
8
7
6
5
4
3
2
1
0ZQZ0Z0ZZ0Z0Z0Z00Z0Z0JNjZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qc8If Kh5, Qh3. If Kh7, Qh8.
2464
8
7
6
5
4
3
2
1
kZ0Z0Z0ZZ0Z0Z0SqNZ0Z0Z0ZZ0Z0Z0Z00Z0ZRZ0ZZ0Z0ZBZ00ZKZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
M. Niemeijer, 1971
2464
8
7
6
5
4
3
2
1
kZ0Z0Z0ZZ0Z0Z0SqNZ0Z0Z0ZZ0Z0Z0Z00Z0ZRZ0ZZKZ0ZBZ00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Kb3If Qg8+, Re6. If QXg7, Re7. If QXe4, BXe4.Otherwise, Re8.
2465
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0ZRZZ0ZKakZB0Z0Z0Z0ZZ0ZNZ0Z00Z0ZNZ0ZZ0Z0Z0Z0
a b c d e f g h
M. Niemeijer, 1970
2465
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0ZRZZ0ZKakZB0Z0Z0M0ZZ0Z0Z0Z00Z0ZNZ0ZZ0Z0Z0Z0
a b c d e f g h
N(d3)f4If BXf4, Nd4.Otherwise, Bg4.
2466
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0ZBZ0A00Z0Z0ZkZZ0Z0Z0ZN0ZKZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
A. E. Niemela, 1976
2466
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZQZ0Z0ZZ0Z0Z0A00Z0Z0ZkZZ0Z0Z0ZN0ZKZ0Z0ZZ0Z0Z0ZB
a b c d e f g h
Bh1If KXh3 or Kg3, Qg2. If Kf5, Qe4. If Kh5, Bf3.
2467
8
7
6
5
4
3
2
1
0J0jbZ0ZZ0Z0Z0Zr0Z0ZQZ0ZM0ZPZ0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
K. Nikolov, 1962
2467
8
7
6
5
4
3
2
1
0J0jbZ0ZZ0Z0Z0Zr0Z0OQZ0ZM0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pd6If Bd7, Nb7. If Rd7, Nc6. If Rc7, pXc7.Oherwise, Qc8.
2468
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZpZ0Z0Z00S0Z0ZpLZ0ZKZkZb
a b c d e f g h
R. Nobre - G. Maritz, 1985
2468
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZpZ0Z0Z00S0Z0ZpLZ0J0ZkZb
a b c d e f g h
Kc1If Ke1, Qg1. If pg1(Q), Qe2. If pg1(N), Qf2.
2469
8
7
6
5
4
3
2
1
0Z0Z0Z0AZ0Z0Z0S00s0s0Z0ZZ0Z0Z0Z00Z0Z0Z0ZJ0Z0Z0Z00Z0Z0Z0Zj0Z0ZBZ0
a b c d e f g h
R. Notaro, 1978
2469
8
7
6
5
4
3
2
1
0Z0Z0Z0AZ0Z0Z0Z00s0s0Z0ZZ0Z0Z0Z00Z0Z0Z0ZJ0Z0Z0Z00Z0Z0Z0Zj0Z0ZBS0
a b c d e f g h
Rg1+
If Kb1 or Rb2, Bd3. If Rd4, Bb5.
2470
8
7
6
5
4
3
2
1
0Z0Z0Z0SZ0Z0Z0Z00Z0Z0s0oZ0Z0Z0Zk0Z0Z0Z0ZZ0Z0Z0SK0Z0Z0Z0ZZBZ0Z0Z0
a b c d e f g h
R. Notaro, 1977
2470
8
7
6
5
4
3
2
1
0Z0Z0S0ZZ0Z0Z0Z00Z0Z0s0oZ0Z0Z0Zk0Z0Z0Z0ZZ0Z0Z0SK0Z0Z0Z0ZZBZ0Z0Z0
a b c d e f g h
Rf8If RXf8 or Rf7 or Rf1-f4, Bg6. If Rf5, RXf5. If Ra6-e6, Rf5. If Rg6, BXg6.
2471
8
7
6
5
4
3
2
1
kZ0Z0Z0ZZRZrZ0Z0KANa0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
C. E. Nylund, 1944
2471
8
7
6
5
4
3
2
1
kZ0Z0Z0ZZRArZ0Z0KZNa0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Bc7If RXc7 or Bc5, Rb8.Otherwise, Ra7.
2472
8
7
6
5
4
3
2
1
0A0ZBZ0ZZ0Z0Z0Z00Z0Z0Z0LZ0Z0Z0Z00Z0ZkZ0MM0Z0Z0Z00Z0Z0Z0ZZ0Z0ZKZ0
a b c d e f g h
T. Nylund, 1967
2472
8
7
6
5
4
3
2
1
0A0ZBZ0ZZ0Z0Z0Z00Z0Z0Z0LZ0Z0ZNZ00Z0ZkZ0ZM0Z0Z0Z00Z0Z0Z0ZZ0Z0ZKZ0
a b c d e f g h
Nf5If KXf5, Qg6. If Kd3, Qe3. If Kd5, Qc6. If Kf3, Qf4.
2473
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZNZ0Z00Z0J0Z0ZZ0S0Z0Z00Z0Z0Z0ZZ0Zko0Z0bL0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
J. Oehquist, 1902
2473
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZNZ0Z00Z0J0Z0ZZ0Z0Z0Z00ZRZ0Z0ZZ0Zko0Z0bL0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Rc4If BXc4, Nc5. If pe2, Qd4.Otherwise, Ne5.
2474
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00L0Z0Z0ZZ0ZkZBZ00Z0Z0Z0ZZ0J0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
J. Oehquist, 1889
2474
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00L0Z0Z0ZZ0ZkZ0Z00Z0Z0ZBZZ0J0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Bg4, Ke4 or Ke5Qd4
2475
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZQZ0J0jZ0Z0ZpZ00Z0Z0Z0ZZ0Z0Z0Zp0Z0Z0Z0sZ0Z0Z0ZR
a b c d e f g h
A. G. Ojanen, 1942
2475
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0J0jZ0Z0ZpZ00Z0Z0Z0ZZ0Z0Z0Zp0Z0Z0ZQsZ0Z0Z0ZR
a b c d e f g h
Qg2If pXg2, RXh2. If RXg2, RXh3. If Kh7, Qg7. If Kh5, Qg5.If RXh1 or pf4, Qg6.
2476
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0ZB0Z0ZQJ0ZZ0Z0Z0Z00Z0Z0Z0Zo0Z0Z0Z0pj0O0Z0ZZ0Z0Z0Z0
a b c d e f g h
A. G. Ojanen, 1942
2476
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0ZB0Z0Z0J0ZZ0Z0ZQZ00Z0Z0Z0Zo0Z0Z0Z0pj0O0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qf6If pa1(Q) or Kc1, Qc2. If pa1(N), Qb1. If Ka1, Qe5. If Kb3, Qb5.
2477
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0Zl0Z0Z0Z00Z0Z0Z0Zj0M0S0Z0NZQZ0Z0ZZ0Z0J0Z0
a b c d e f g h
T. Oksala, 1954
2477
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0Zl0Z0Z0Z00Z0Z0Z0Zj0M0S0Z0NZQZ0Z0ZZ0ZKZ0Z0
a b c d e f g h
Kd1If Qh5+, Ne2. If Qd8+, Nd5. If Qd5+, NXd5. If QXc3, RXc3.Otherwise, Nb1.
2478
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZPZPZP0Z0ZkZ0ZZ0Z0Z0Z00Z0Z0J0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
A. E. van Ommeren, 1915
2478
8
7
6
5
4
3
2
1
0Z0Z0A0ZZ0ZPZ0ZP0Z0ZkZ0ZZ0Z0Z0Z00Z0Z0J0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
pf8(B), Kf6 or Kf7Qf5
2479
8
7
6
5
4
3
2
1
0Z0Z0ZRZZ0Z0Z0Zp0Z0J0ZnLZ0Z0ZkZ00Z0Z0Z0ZZ0Z0ZPZ00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1927
2479
8
7
6
5
4
3
2
1
0Z0ZRZ0ZZ0Z0Z0Zp0Z0J0ZnLZ0Z0ZkZ00Z0Z0Z0ZZ0Z0ZPZ00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Re8If Nh8, Re5. If Ne5, RXe5. If Nf8, RXf8.Otherwise, Rf8.
2480
8
7
6
5
4
3
2
1
0Z0m0Z0ZZpZ0LnZ00J0Z0Z0ZZ0ZkZ0Z00Z0ZRZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2480
8
7
6
5
4
3
2
1
0Z0mQZ0ZZpZ0ZnZ00J0Z0Z0ZZ0ZkZ0Z00Z0ZRZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qe8If Kd6, Rd4. If Nc6, Qe6. If Ne6, QXe6.If Ne5, QXe5. Otherwise, Qe5.
2481
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Jp0Z0Z0ZbSZ0Z0ZkZ00Z0Z0Z0ZZ0Z0L0Z00Z0Z0Z0MZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2481
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Jp0Z0Z0ZbZZ0Z0ZkZ00Z0Z0Z0ZZ0Z0L0ZR0Z0Z0Z0MZ0Z0Z0Z0
a b c d e f g h
Rh3If Bh5, RXh5.Otherwise, Rf3.
2482
8
7
6
5
4
3
2
1
bL0ZNZ0ZZnZ0Z0Z00j0Z0Z0ZZ0Z0Z0Z00JBZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2482
8
7
6
5
4
3
2
1
bL0ZNZ0ZZnZ0Z0Z00j0Z0Z0ZZ0Z0Z0Z00ZBZ0Z0ZZ0J0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Kc3If Ka5, Qa7. If Kc5 or Kc6, Qc7.
2483
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZNZ0Z0Z00Z0OkZPJZ0Z0M0Z00Z0ZQZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2483
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZNZ0Z0Z00Z0OkZPJZ0Z0Z0Z00ZNZQZ0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Nc4+
If Kd7, Nb6. If Kf6, Qe5.
2484
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0ZBZ0ZZ0m0Z0Z00Z0ZkZ0ZZ0Z0Z0Ln0ZKZ0Z0AZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2484
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0ZBZ00Z0Z0Z0ZZ0m0Z0Z00Z0ZkZ0ZZ0Z0Z0Ln0ZKZ0Z0AZ0Z0Z0Z0
a b c d e f g h
Bf7If Kd4, Qe5. If Kf5, Qg6. If Nf4, QXf4. If Ng1 or Nf2 or Ng5, Qf4.If Nd3, QXd3. Otherwise, Qd3.
2485
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0o00Z0Z0ZKZZ0Z0Z0Zp0Z0Z0ZkMZ0Z0Z0Zp0Z0Z0Z0LZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2485
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0J00Z0Z0Z0ZZ0Z0Z0Zp0Z0Z0ZkMZ0Z0Z0Zp0Z0Z0Z0LZ0Z0Z0Z0
a b c d e f g h
KXg7If KXh4, Qf4. If Kg5, Qg3.
2486
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0oNZ0Z0KZBjbL0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1930
2486
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0oNZ0Z0KZBjbZ0LZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qh4If KXc4, QXe4. If Ke5, Qf6.
2487
8
7
6
5
4
3
2
1
0Z0ZkZ0ZZ0ZNO0J00Z0ZRZ0ZZ0M0Z0Z00Z0Z0ZnZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1931
2487
8
7
6
5
4
3
2
1
0Z0ZkZ0ZZ0ZNO0J0NZ0ZRZ0ZZ0Z0Z0Z00Z0Z0ZnZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Na6If KXd7, pe8(Q)If Nf6, NXf6. Otherwise, Nf6.
2488
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0o0Z00Z0ZQZ0ZZkZ0Z0Z00Z0ZpZ0ZZNJ0M0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1932
2488
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0o0Z00Z0ZQZ0ZZkZ0Z0Z00Z0ZpZ0ZZNZ0M0Z00J0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Kb2, Ka4 or Kb4Qc4
2489
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0o0Z0Z0RakZ0Z0ZZ0Z0Z0Z00mKZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1932
2489
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0L0Z0ZZ0o0Z0Z0RakZ0Z0ZZ0Z0Z0Z00mKZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qd6If Kb5, Qa6. If NXa4 or Nd1, Qd3. If Nd3, QXd3.
2490
8
7
6
5
4
3
2
1
0S0Z0Z0ZZ0Z0Z0Z00OkZKZ0ZZ0a0Z0Z00oQZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1932
2490
8
7
6
5
4
3
2
1
0S0Z0Z0ZZ0Z0Z0Z00OkZ0Z0ZZ0a0J0Z00oQZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Ke5If Kd7, Qe6. If pb3, Qa4.
2491
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0ZpZ0ZZ0Z0J0Z00o0Z0Z0ZZpj0Z0Z00Z0ZQZ0ZZ0Z0ZBZ0
a b c d e f g h
V. Onitiu, 1932
2491
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0ZKZ0ZZ0Z0Z0Z00o0Z0Z0ZZpj0Z0Z00Z0ZQZ0ZZ0Z0ZBZ0
a b c d e f g h
KXe6If Kd4, Qe5. If pb2, Qd3.
2492
8
7
6
5
4
3
2
1
NZ0Z0Z0ZZ0Z0Z0Z0PZkZKZ0ZZ0o0Z0Z00aQZ0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1932
2492
8
7
6
5
4
3
2
1
NZ0Z0Z0ZZ0Z0Z0Z0PZkZKZ0ZZ0o0Z0Z00a0Z0Z0ZZ0ZQZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qd3If pd4, Qd5.Otherwise, Qd7.
2493
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0L0Z0ZZNZbZ0Z0BZkZ0Z0ZZ0Z0J0Z0
a b c d e f g h
V. Onitiu, 1932
2493
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0Z00Z0L0Z0ZZNZbZ0Z0BZkZ0J0ZZ0Z0Z0Z0
a b c d e f g h
Kf2If Kd1, QXd3.Otherwise, Qd2.
2494
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00o0Z0Z0ZZKZ0Z0Z00Z0ZNZPZZ0ZkZ0Z00Z0Z0L0ZZ0Z0Z0A0
a b c d e f g h
V. Onitiu, 1932
2494
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00o0Z0Z0ZZ0Z0Z0Z00J0ZNZPZZ0ZkZ0Z00Z0Z0L0ZZ0Z0Z0A0
a b c d e f g h
Kb4If KXe4, Qf5. If pb5, Nc5.
2495
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00Z0A0Z0ZZ0ZBZ0Z00ZPj0Z0ZZ0Z0Z0Z00ZKZ0S0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1932
2495
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0Z00ZBA0Z0ZZ0Z0Z0Z00ZPj0Z0ZZ0Z0Z0Z00ZKZ0S0ZZ0Z0Z0Z0
a b c d e f g h
Bc6If KXc4, Rf4. If Ke3, Bc5.
2496
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0o00Z0Z0ZBZZ0J0Z0Z00Z0Z0ZNZZ0Z0Z0Z0PZ0j0Z0ZZ0Z0ZQZ0
a b c d e f g h
V. Onitiu, 1932
2496
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0Z0o00Z0Z0ZBZZ0J0M0Z00Z0Z0Z0ZZ0Z0Z0Z0PZ0j0Z0ZZ0Z0ZQZ0
a b c d e f g h
Ne5If Kc3, Qc1. If Ke3, Nc4.
2497
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0ZKZ00Z0Z0Z0ZZ0Z0okZ00Z0Z0O0ZZ0Z0ZQZP0Z0Z0O0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1926
2497
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0Z0ZKZ00Z0Z0Z0ZZ0Z0okZ00Z0Z0O0ZZ0Z0Z0ZP0Z0Z0OQZZ0Z0Z0Z0
a b c d e f g h
Qg2If KXf4, Qg4. If pXf4, Qd5. If pe4, Qg5.
2498
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZKZ0Z0Z00Z0Z0Z0ZZko0Z0Z0NZ0Z0Z0ZL0Z0Z0Z00ZPZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1926
2498
8
7
6
5
4
3
2
1
0Z0Z0Z0ZZ0J0Z0Z00Z0Z0Z0ZZko0Z0Z0NZ0Z0Z0ZL0Z0Z0Z00ZPZ0Z0ZZ0Z0Z0Z0
a b c d e f g h
Kc7If pc4 or Ka5 or Ka6, Nc3. If Kc4, QXc5.
2499
8
7
6
5
4
3
2
1
0Z0Z0ZRZZ0Z0Z0Z00Z0Z0ZPjZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0S00Z0Z0ZpZZ0Z0Z0Jb
a b c d e f g h
V. Onitiu, 1926
2499
8
7
6
5
4
3
2
1
0Z0Z0ZRZZ0Z0Z0O00Z0Z0Z0jZ0Z0Z0Z00Z0Z0Z0ZZ0Z0Z0S00Z0Z0ZpZZ0Z0Z0Jb
a b c d e f g h
pg7, Kh7 or Kh5Rh8
2500
8
7
6
5
4
3
2
1
0m0Z0Z0ZZQZ0Z0Z00ZrZ0Z0ZZ0ZkZ0Z00ZNM0Z0ZZ0ZKZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
V. Onitiu, 1926
2500
8
7
6
5
4
3
2
1
Qm0Z0Z0ZZ0Z0Z0Z00ZrZ0Z0ZZ0ZkZ0Z00ZNM0Z0ZZ0ZKZ0Z00Z0Z0Z0ZZ0Z0Z0Z0
a b c d e f g h
Qa8If Kc5, Qa5. If Na6 or Nd7, QXc6.
![Dan Meinking's Chess Problem Collection€¦ · [wdPdwdw)] 18.Qe4+ Ka1 19.Qe5 Kb1 20.Qf5+ Ka1 21.Qf6 Kb1 22.Qg6+ Ka1 23.Qg7 K b1 24.Qh7+ Ka1 25.Qh8! Kb1 26.Qh1# [dw)wdwdw] [p0wdwdpd]](https://static.documents.pub/doc/80x56/5f0282347e708231d4049c7d/dan-meinkings-chess-problem-wdpdwdw-18qe4-ka1-19qe5-kb1-20qf5-ka1-21qf6.jpg)
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