MESON Chess Problem Database

Problem Display
PID: 69075 (2q2RK1/Q1Bpk1P1/2P1B2R/4N1n1/3r4/8/8/8 w - - 0 1)

Visserman, Eeltje

Scaecvaria, 1961

2q2RK1/Q1Bpk1P1/2P1B2R/4N1n1/3r4/8/8/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf8+
      • 2.gxf8Q#
    • 1...Sxe6
      • 2.Sg6#
    • 1...dxc6
      • 2.Sxc6#
    • 1...dxe6
      • 2.Sg6#
    • 1...d5
      • 2.Qc5#
    • 1...d6
      • 2.Bd8#
  • Tries
    • 1.Bd8+?
      • 1...Kd6
        • 2.Qxd4#
      • 1...Qxd8!
    • 1.Qc5+?
      • 1...Rd6
        • 2.Bxd6#
        • 2.Qxd6#
      • 1...d6!
  • Keys
    • 1.Bxd7!
      • threat
        • 2.Sg6#
      • 1...Qxf8+
        • 2.gxf8Q#
        • 2.gxf8B#
      • 1...Qxd7
        • 2.Bd8#
      • 1...Qxc7
        • 2.Re8#
      • 1...Rxd7
        • 2.Bd6#
      • 1...Qe8
        • 2.Rxe8#
      • 1...Rd6
        • 2.Bxd6#
      • 1...Sf7
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(e);CHECK,OGATE,XR(H)::PXQ(e)=Q
    • S(b);SBLOCK,XB(C)::S(A)
    • P(c);XP(B)::S(A),XP(c)
    • P(c);SBLOCK,XB(C)::S(A)
    • P(c);N_GUARD,S_CUTR(a)::QAB(E)
    • P(c);SBLOCK::QAR(E)+B(F),DCHECK
  • Tries
    • Try
      • B(F);CHECK,N_SPINR(H),P_PINP(c)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAR2(E),XR(a)
      • Refutation
        • Q(e);P_PINR(H),XB(F)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • B(C);XP(c)
    • Threat
      • S(A)
    • Vars
      • Q(e);CHECK,OGATE,XR(H)::PXQ(e)=Q
      • Q(e);N_GUARD,N_PINR(H),XB(C)::B(F)
      • Q(e);N_GUARD,N_PINR(H),XB(F)::R1(H)
      • R(a);N_GUARD,XB(C)::B(F)
      • Q(e);N_GUARD::R1(H),XQ(e)
      • R(a);N_GUARD::B(F),XR(a)
      • S(b);N_GUARD::R1(D)
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