MESON Chess Problem Database
Problem Display
PID: 79688 (8/3Q4/1Np5/B1PpK2B/2Ppp3/2pkP3/4R3/8 w - - 0 1)
Foster, Geoffrey R
The Problemist, 2008
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...dxc4
- 2.Qxd4#
- 1...dxc4
- Tries
- 1.Kf4?
- 1...dxc4
- 2.Qxd4#
- 1...c2
- 2.Rd2#
- 1...dxe3!
- 1...dxc4
- 1.Rb2?
- 1...Kxe3
- 2.Qh3#
- 1...dxe3
- 2.Be2#
- 1...dxc4
- 2.Qxd4#
- 1...c2
- 2.Rb3#
- 1...cxb2!
- 1...Kxe3
- 1.Qh3?
- 1...dxe3
- 2.Qxe3#
- 1...c2
- 2.Rd2#
- 1...dxc4!
- 1...dxe3
- 1.Qxc6?
- 1...dxe3
- 2.Qxd5#
- 1...dxc4
- 2.Qxe4#
- 1...c2!
- 1...dxe3
- 1.cxd5?
- 1...dxe3
- 2.dxc6#
- 1...cxd5
- 2.Qb5#
- 1...c2!
- 1...dxe3
- 1.Kf4?
- Keys
- 1.Ra2!
- 1...Kxe3
- 2.Qh3#
- 1...dxe3
- 2.Be2#
- 1...dxc4
- 2.Qxd4#
- 1...c2
- 2.Ra3#
- 1...Kxe3
- 1.Ra2!
This is a version of 51640
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- P(e);OGATE,P_SPINP(c),XP(C)::QAR1(I),XP(c)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- P(e);OGATE,P_SPINP(c),XP(C)::QAR1(I),XP(c)
- P(a);N_GUARD::R1(A)
- Refutation
- P(c);P_SPINP(e),XP(B)
- Try
- R(A);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(B)::QAR(I)
- P(c);P_SPINP(e),SBLOCK,XP(B)::B(G)
- P(e);OGATE,P_SPINP(c),XP(C)::QAR1(I),XP(c)
- P(a);OGATEB,SBLOCK::R(A)
- Refutation
- P(a);XR(A)
- Try
- Q(I);
- Vars
- P(c);OGATE,P_SPINP(c),XP(B)::QAR1(I),XP(c)
- P(a);N_GUARD::R1(A)
- Refutation
- P(e);XP(C)
- Try
- Q(I);XP(f)
- Vars
- P(c);OGATEB,XP(B)::QAR2(I),XP(e)
- P(e);OGATE,XP(C)::QAB1(I),XP(d)
- Refutation
- P(a);
- Try
- P(C);XP(e)
- Vars
- P(c);XP(B)::QAR(I)+P(C),XP(f)
- P(f);OGATE,XP(C)::QAB(I)
- Refutation
- P(a);
- Try
- Actual
- R(A);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(B)::QAR(I)
- P(c);P_SPINP(e),SBLOCK,XP(B)::B(G)
- P(e);OGATE,P_SPINP(c),XP(C)::QAR1(I),XP(c)
- P(a);OGATEB,SBLOCK::R(A)
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