MESON Chess Problem Database
Problem Display
PID: 6077 (8/2BQp3/8/1r1NP1K1/Rp1pk3/1P2p2R/2Prp3/8 w - - 0 1)
Langstaff, William A
The Problemist, 1926
#2
9 + 8
| 56 | The Problemist | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Rxd5
- 2.Qg4#
- 2.Qf5#
- 1...d3
- 2.Sc3#
- 1...e6
- 2.Sf6#
- 1...Rxd5
- Tries
- 1.Sxb4?
- threat
- 2.Qg4#
- 2.Qf5#
- 1...Rxb4
- 2.Qc6#
- 1...d3
- 2.Qg4#
- 1...e6
- 2.Qh7#
- 1...Rxe5+!
- threat
- 1.Sxe7?
- threat
- 2.Qg4#
- 2.Qf5#
- 1...Rxc2
- 2.Qf5#
- 1...d3
- 2.Qg4#
- 1...Rxe5+!
- threat
- 1.Qc6?
- threat
- 2.Sc3#
- 2.Sf6#
- 1...Rxd5
- 2.Qg6#
- 1...d3
- 2.Qc4#
- 1...Rxc2!
- threat
- 1.Sxb4?
- Keys
- 1.c4!
- threat
- 2.Qf5#
- 1...Kd3
- 2.Qf5#
- 1...bxc4 ep
- 2.Rxe3#
- 1...dxc4 ep
- 2.Sxc3#
- 1...d3
- 2.Qg4#
- 1...e6
- 2.Qh7#
- threat
- 1.c4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- P(e);N_GUARD,P_SPINP(d)::S(E)
- P(h);N_GUARD::S(E)
- Tries
- Try
- S(E);P_SPINP(F),XP(d)
- Threat
- DUALS(2)
- Vars
- R(g);N_GUARD,N_PINP(F),XS(E)::QAB(I)
- P(e);::QAR2(I)
- P(h);OGATE::QAB(I)
- Refutation
- R(g);CHECK,XP(F)
- Try
- S(E);P_SPINP(F),XP(h)
- Threat
- DUALS(2)
- Vars
- R(a);XP(A)::QAB1(I)
- P(e);P_SPINP(d)::QAR2(I)
- Refutation
- R(g);CHECK,XP(F)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(g);P_PINP(F),P_SPINR(g),SBLOCK,XS(E)::QAB(I)
- P(e);OGATEB,P_SPINP(d)::QAR2(I)
- Refutation
- R(a);XP(A)
- Try
- Actual
- P(A);
- Threat
- QAB1(I)
- Vars
- K(f);P_SPINP(c),S_FLIGHT::QAB(I)
- P(d);EP,P_SPINP(e),XP(A)::R1(C),XP(c)
- P(e);EP,N_GUARD,P_SPINP(d),XP(A)::S(E),XP(e)
- P(e);SBLOCK::QAR2(I)
- P(h);OGATE::QAB(I)
Developed and maintained by Brian Stephenson.
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