MESON Chess Problem Database

Problem Display
PID: 274119 (1B6/8/8/3p2p1/1Q1Pp1R1/3PkP2/1P2B3/6K1 w - - 0 1)

Stepochkin, Anatoly Viktorovich

Springaren, 1991

1B6/8/8/3p2p1/1Q1Pp1R1/3PkP2/1P2B3/6K1

#2

9 + 4

3713 Snap 2024

SOLUTION

  • SOUND
  • Tries
    • 1.Bd1?
      • 1...Kxd3
        • 2.Qc3#
      • 1...exd3
        • 2.Qe1#
      • 1...exf3!
    • 1.Bf1?
      • 1...Kxf3
        • 2.Rg3#
      • 1...exf3
        • 2.Qe1#
      • 1...exd3!
    • 1.dxe4?
      • 1...dxe4
        • 2.Rxe4#
      • 1...Kxe2!
    • 1.fxe4?
      • 1...dxe4
        • 2.Rxe4#
      • 1...Kxe2!
  • Keys
    • 1.Qe1!
      • 1...Kxd4
        • 2.Qf2#
      • 1...exd3
        • 2.Bd1#
      • 1...exf3
        • 2.Bf1#

Anticipated by 200177(1990)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(F)
        • P(b);SBLOCK,XP(D)::QAR2(F)
      • Refutation
        • P(b);XP(E)
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(E)::R1(H)
        • P(b);SBLOCK,XP(E)::QAR2(F)
      • Refutation
        • P(b);XP(D)
    • Try
      • P(D);XP(b)
      • Vars
        • P(c);OGATE,XP(D)::R1(H),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • P(E);XP(b)
      • Vars
        • P(c);OGATE,XP(E)::R1(H),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
  • Actual
    • Q(F);
    • Vars
      • K(a);N_GUARD,P_SPINP(b),S_FLIGHT,XP(G)::QAB(F)
      • P(b);SBLOCK,XP(D)::QAR(F)+B(C)
      • P(b);SBLOCK,XP(E)::QAR(F)+B(C)
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