MESON Chess Problem Database

Problem Display
PID: 88234 (2KbB1r1/1R1P1N2/2k5/p2p3r/3P2nP/2B1p3/N1b2q1R/8 w - - 0 1)

Bennett, Frederick

American Chess Problemist, 1949

2KbB1r1/1R1P1N2/2k5/p2p3r/3P2nP/2B1p3/N1b2q1R/8

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe8
      • 2.dxe8Q#
      • 2.dxe8B#
    • 1...Bxh4
      • 2.d8S#
    • 1...Bg5
      • 2.d8S#
    • 1...Bb6
      • 2.d8S#
    • 1...Bf6
      • 2.d8S#
    • 1...Bc7
      • 2.d8S#
    • 1...Be7
      • 2.d8S#
    • 1...a4
      • 2.Sb4#
  • Tries
    • 1.Rb6+?
      • 1...Bxb6
        • 2.d8S#
      • 1...Kxb6!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Sxd8#
      • 1...Qxh4
        • 2.Rxc2#
      • 1...Qxf7
        • 2.Rxc2#
      • 1...Rxe8
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Bxh4
        • 2.d8S#
      • 1...axb4
        • 2.Sxb4#
      • 1...Bb6
        • 2.d8S#
      • 1...Qf6
        • 2.Rxc2#
      • 1...Bg5
        • 2.d8S#
      • 1...Bf6
        • 2.d8S#
      • 1...Bc7
        • 2.d8S#
      • 1...Be7
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(j);OGATE,XB(J)::PXR(j)=Q
    • B(i);OGATE,P_PINB(J),XP(E)::P=S
    • B(i);OGATE,P_PINB(J)::P=S
    • P(e);N_GUARD::S(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • B(i);OGATE,P_PINB(J),SBLOCK,XR(F)::P=S
      • Refutation
        • K(h);P-FLIGHT,XR(F)
  • Actual
    • B(C);
    • Threat
      • S(H),XB(i)
    • Vars
      • Q(b);OGATE,XP(E)::R(B),XB(a)
      • Q(b);OGATE,XS(H)::R(B),XB(a)
      • R(j);OGATE,XB(J)::PXR(j)=Q
      • B(i);OGATE,P_PINB(J),XP(E)::P=S
      • P(e);XB(C)::S(A),XP(e)
      • B(i);OGATE,P_PINB(J)::P=S
      • Q(b);OGATE::R(B),XB(a)
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