MESON Chess Problem Database

Problem Display
PID: 158425 (3B4/1N1pb3/6K1/4k3/2Q5/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

3B4/1N1pb3/6K1/4k3/2Q5/8/8/8

#2

4 + 3

15148 Sadier Collection 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Bf6#
    • 1...Bb4
      • 2.Bf6#
    • 1...Bc5
      • 2.Bf6#
    • 1...Bd6
      • 2.Bf6#
    • 1...Bf6
      • 2.Bxf6#
    • 1...Bf8
      • 2.Bf6#
  • Tries
    • 1.Bc7+?
      • 1...Bd6
        • 2.Bxd6#
      • 1...d6!
    • 1.Bxe7?
      • threat
        • 2.Bd6#
        • 2.Bf6#
      • 1...d6
        • 2.Bxd6#
        • 2.Bf6#
      • 1...d5!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kxd4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Bc7#
      • 1...Bxd6
        • 2.Bf6#

Anticipated by 108860(1929)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(c);OGATE::B(D)
    • B(c);OGATE::B(D),XB(c)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::B(D),XB(c)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • B(D);XB(c)
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(C)::B(D)
      • B(c);OGATE,SBLOCK,XS(C)::B(D)
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