MESON Chess Problem Database

Problem Display
PID: 81195 (6R1/4r3/1B2k3/7R/2N3N1/3P2PB/Q7/3bK3 w - - 0 1)

Boyer, Jean-Pierre

Probleemblad, 1967

6R1/4r3/1B2k3/7R/2N3N1/3P2PB/Q7/3bK3

#2

10 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7+
      • 2.Sge5#
    • 1...Kf7+
      • 2.Sce5#
  • Tries
    • 1.Sce3+?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kd7
        • 2.Qd5#
      • 1...Bb3!
    • 1.Sge5+?
      • 1...Kd5
        • 2.Qa5#
      • 1...Kf6
        • 2.Rh6#
        • 2.Rg6#
      • 1...Bg4!
    • 1.Re5+?
      • 1...Kf7
        • 2.Sd6#
      • 1...Kd7!
  • Keys
    • 1.Rh6+!
      • 1...Kd5+
        • 2.Sce3#
      • 1...Kf5+
        • 2.Sge3#
      • 1...Kd7+
        • 2.Sge5#
      • 1...Kf7+
        • 2.Sce5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);CHECK,S_FLIGHT::B(E)+S(G),DCHECK
    • K(b);CHECK,S_FLIGHT::QAB(B)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,P_PINS(F)::QAR1(B)
        • K(b);P_PINS(F),S_FLIGHT::QAR2(B)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P_PINS(G),S_FLIGHT::QAR(B)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • R(H);CHECK
      • Vars
        • K(b);P_PINR(H),S_FLIGHT::QAB(B)+S(F),DCHECK
      • Refutation
        • K(b);P_PINR(H),S_FLIGHT
  • Actual
    • R(H);CHECK
    • Vars
      • K(b);CHECK,S_FLIGHT::QAB(B)+S(F),DCHECK
      • K(b);CHECK,S_FLIGHT::B(E)+S(G),DCHECK
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