MESON Chess Problem Database

Problem Display
PID: 252923 (2nB4/b1PRp3/1k4K1/1n1Q4/R7/8/8/8 w - - 0 1)

Gorislavski, Mikhail

Probleemblad, 1983

2nB4/b1PRp3/1k4K1/1n1Q4/R7/8/8/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Sxc7
      • 2.Bxc7#
    • 1...Sd6
      • 2.c8S#
  • Tries
    • 1.Qb7+?
      • 1...Kc5
        • 2.Rd5#
      • 1...Kxb7!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Qxb5#
      • 1...Ka5
        • 2.Qxb5#
      • 1...Ka6
        • 2.Qxb5#
      • 1...Bb8
        • 2.cxb8S#
      • 1...Sd6
        • 2.c8Q#
        • 2.c8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(c);OGATE::PXB(c)=Q
    • S(a);OGATE,P_SPINS(a),XP(D)::B(F),XS(a)
    • S(e);OGATE::P=S
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • R(A);P_PINS(a)
    • Threat
      • QAR1(B),XS(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(B),XS(a)
      • K(b);N_SPINS(a),P-FLIGHT::QAB1(B),XS(a)
      • B(c);OGATE::PXB(c)=S
      • S(e);OGATE::P=Q
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