MESON Chess Problem Database
Problem Display
PID: 6114 (nB1Q4/2rpp3/1pP1P3/1P2kpK1/3N1R2/8/8/7B w - - 0 1)
Olsson, Anders
Chess Pie, 1927
#2
9 + 7
| 273 | Mat Plus | 1994 |
| 56 | The Problemist | 2008 |
SOLUTION
- SOUND
- Sets
- 1...dxc6
- 2.Rxf5#
- 1...dxe6
- 2.Sf3#
- 1...d5
- 2.Qxd5#
- 1...d6
- 2.Qh8#
- 1...dxc6
- Tries
- 1.Sxf5?
- 1...Kxe6
- 2.Qxe7#
- 1...dxc6
- 2.Re4#
- 1...dxe6
- 2.Re4#
- 2.Qd4#
- 2.Qh8#
- 1...d5
- 2.Qxd5#
- 1...d6!
- 1...Kxe6
- 1.Bg2?
- 1...dxc6
- 2.Rxf5#
- 1...dxe6
- 2.Sf3#
- 1...d5
- 2.Qxd5#
- 1...d6
- 2.Qh8#
- 1...Kd6!
- 1...dxc6
- 1.Bxc7+?
- 1...d6
- 2.Qh8#
- 1...Sxc7!
- 1...d6
- 1.Rxf5+?
- 1...Kd6
- 2.Rd5#
- 2.Qxd7#
- 1...Kxd4!
- 1...Kd6
- 1.Sxf5?
- Keys
- 1.Qxe7!
- threat
- 2.exd7#
- 1...dxc6
- 2.Sxc6#
- 1...dxe6
- 2.Qxe6#
- 1...d6
- 2.Qf6#
- 1...d5
- 2.Sf3#
- threat
- 1.Qxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- P(e);XP(F)::R1(C),XP(b)
- P(e);SBLOCK,XP(G)::S(B)
- P(e);OGATE::QAR1(I),XP(e)
- P(e);N_SPINR(d),SBLOCK::QAB(I)
- Tries
- Try
- S(B);XP(b)
- Vars
- K(a);N_SPINR(d),OGATEB,P-FLIGHT,XP(G)::QAR1(I),XP(f)
- P(e);XP(F)::R1(C)
- P(e);OGATE::QAR1(I),XP(e)
- Refutation
- P(e);N_SPINR(d)
- Try
- B(A);
- Vars
- P(e);XP(F)::R1(C),XP(b)
- P(e);SBLOCK,XP(G)::S(B)
- P(e);OGATE::QAR1(I),XP(e)
- P(e);N_SPINR(d),SBLOCK::QAB(I)
- Refutation
- K(a);P_SPINP(e),S_FLIGHT
- Try
- B(H);CHECK,XR(d)
- Vars
- P(e);P_SPINP(e)::QAB(I)
- Refutation
- S(g);XB(H)
- Try
- R(C);CHECK,XP(b)
- Refutation
- K(a);N_SPINR(d),P_SPINP(e),S_FLIGHT,XS(B)
- Try
- Actual
- Q(I);XP(f)
- Threat
- QAR(I)+P(G),XP(e)
- Vars
- P(e);XP(F)::S(B),XP(e)
- P(e);OGATE,P_SPINP(e),XP(G)::QAR1(I),XP(e)
- P(e);N_SPINR(d),SBLOCK::QAB1(I)
- P(e);SBLOCK::S(B)
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