MESON Chess Problem Database

Problem Display
PID: 151790 (8/3N4/4B2K/2P5/4kp2/1P2P3/4Q3/8 w - - 0 1)

Aleksandrov, Vladimir Aleksandrovich

Uralski Problemist, 2009

8/3N4/4B2K/2P5/4kp2/1P2P3/4Q3/8

#2

7 + 2

5454 Near Snap 2014
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Bg4?
      • 1...Kd5
        • 2.Qf3#
      • 1...fxe3
        • 2.Qc4#
      • 1...f3!
    • 1.Bd5+?
      • 1...Kf5
        • 2.Qh5#
        • 2.e4#
      • 1...Kxd5!
    • 1.Bf5+?
      • 1...Kd5
        • 2.Qf3#
      • 1...Kxf5!
  • Keys
    • 1.Bc4!
      • 1...Kf5
        • 2.e4#
      • 1...fxe3
        • 2.Qg4#
      • 1...f3
        • 2.Qd3#

Anticipated by 48003(1983), 157942(1986), 267949(1995)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • P(b);P_SPINP(b),SBLOCK,XP(C)::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • B(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XB(E)
    • Try
      • B(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XB(E)
  • Actual
    • B(E);
    • Vars
      • K(a);OGATE,S_FLIGHT::P(C)
      • P(b);OGATEB,P_SPINP(b),SBLOCK,XP(C)::QAR2(A)
      • P(b);SBLOCK::QAB1(A)
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