MESON Chess Problem Database
Problem Display
PID: 271401 (k7/1p1ppp2/5RP1/1NP5/8/1p2Q3/p6B/3R3K w - - 0 1)
Gurr, John
Sunday Referee, 1933
(First published on Sun Jan 22 1933)
#2
8 + 7
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...a1Q
- 2.Rxa1#
- 1...a1S
- 2.Rxa1#
- 1...a1B
- 2.Rxa1#
- 1...a1R
- 2.Rxa1#
- 1...b2
- 2.Qa3#
- 1...exf6
- 2.Qe8#
- 1...fxg6
- 2.Rf8#
- 1...a1Q
- Tries
- 1.c6?
- threat
- 2.Qa7#
- 1...a1Q
- 2.Rxa1#
- 1...a1R
- 2.Rxa1#
- 1...b6!
- threat
- 1.gxf7?
- threat
- 2.f8Q#
- 2.f8R#
- 1...exf6
- 2.Qe8#
- 2.f8Q#
- 2.f8R#
- 1...d6
- 2.f8Q#
- 2.f8R#
- 1...e5
- 2.f8Q#
- 2.f8R#
- 1...a1Q
- 2.Rxa1#
- 2.f8Q#
- 2.f8R#
- 1...a1S
- 2.Rxa1#
- 2.f8Q#
- 2.f8R#
- 1...a1B
- 2.Rxa1#
- 2.f8Q#
- 2.f8R#
- 1...a1R
- 2.Rxa1#
- 2.f8Q#
- 2.f8R#
- 1...b2
- 2.Qa3#
- 2.f8Q#
- 2.f8R#
- 1...d5
- 2.f8Q#
- 2.f8R#
- 1...e6
- 2.f8Q#
- 2.f8R#
- 1...b6!
- threat
- 1.g7?
- threat
- 2.g8Q#
- 2.g8R#
- 1...exf6
- 2.Qe8#
- 2.g8Q#
- 2.g8R#
- 1...d6
- 2.g8Q#
- 2.g8R#
- 1...e5
- 2.g8Q#
- 2.g8R#
- 1...a1Q
- 2.Rxa1#
- 2.g8Q#
- 2.g8R#
- 1...a1S
- 2.Rxa1#
- 2.g8Q#
- 2.g8R#
- 1...a1B
- 2.Rxa1#
- 2.g8Q#
- 2.g8R#
- 1...a1R
- 2.Rxa1#
- 2.g8Q#
- 2.g8R#
- 1...b2
- 2.Qa3#
- 2.g8Q#
- 2.g8R#
- 1...d5
- 2.g8Q#
- 2.g8R#
- 1...e6
- 2.g8Q#
- 2.g8R#
- 1...b6!
- threat
- 1.c6?
- Keys
- 1.Qe6!
- 1...dxe6
- 2.Rd8#
- 1...exf6
- 2.Qe8#
- 1...fxe6
- 2.Rf8#
- 1...fxg6
- 2.Rf8#
- 2.Qg8#
- 1...b6
- 2.Qd5#
- 1...d6
- 2.Qc8#
- 1...a1Q
- 2.Rxa1#
- 1...a1S
- 2.Rxa1#
- 1...a1B
- 2.Rxa1#
- 1...a1R
- 2.Rxa1#
- 1...b2
- 2.Qxa2#
- 1...d5
- 2.Qc8#
- 1...dxe6
- 1.Qe6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- P(a);OGATEB,P_PINR(A)::R(A),XQ(a)
- P(a);OGATEB::R(A),XS(a)
- P(a);OGATEB::R(A),XB(a)
- P(a);OGATEB,P_PINR(A)::R(A),XR(a)
- P(b);OGATE::QAR(D)
- P(e);OGATE,XR(G)::QAR(D)
- P(f);OGATE,XP(H)::R(G)
- Tries
- Try
- P(F);
- Threat
- QAR1(D)
- Vars
- P(a);OGATEB,P_PINR(A)::R(A),XQ(a)
- P(a);OGATEB,P_PINR(A)::R(A),XR(a)
- Refutation
- P(c);
- Try
- P(H);XP(f)
- Threat
- P=Q
- Vars
- P(d);::P=Q
- P(e);::P=Q
- Refutation
- P(c);
- Try
- P(H);
- Threat
- P=Q
- Vars
- P(d);::P=Q
- P(e);::P=Q
- Refutation
- P(c);
- Try
- Actual
- Q(D);
- Vars
- P(d);OGATE,XQ(D)::R(A)
- P(e);OGATE,XR(G)::QAR(D)
- P(f);OGATE,XQ(D)::R(G)
- P(c);OGATEB::QAB(D)
- P(d);OGATE::QAR2(D)
- P(a);OGATEB,P_PINR(A)::R(A),XQ(a)
- P(a);OGATEB::R(A),XS(a)
- P(a);OGATEB::R(A),XB(a)
- P(a);OGATEB,P_PINR(A)::R(A),XR(a)
- P(b);OGATE::QAR(D),XP(a)
Developed and maintained by Brian Stephenson.
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