MESON Chess Problem Database

Problem Display
PID: 10054 (1b3nnq/1BP1p1PN/2p1k3/R1BN3P/8/1P2KP2/r1P1R1Pr/1b6 w - - 0 1)

Lipton, Michael

1st Prize, Segal MT, 1961

1b3nnq/1BP1p1PN/2p1k3/R1BN3P/8/1P2KP2/r1P1R1Pr/1b6

#2

14 + 10

3147 Chess Problems: Introduction to an Art 1963
3749 FIDE Album (1959-1961) 1966
5862 An ABC of Chess Problems 1970
56 The Problemist 1980
5395 Schach fur Nussknacker 1994
4640 Chess Wizardry: The New ABC of Chess Problems 1996
133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.c8Q#
  • Tries
    • 1.Kd2+?
      • 1...Kf5
        • 2.g4#
      • 1...Kd7
        • 2.c8Q#
      • 1...Kf7
        • 2.gxf8Q#
      • 1...Kxd5!
    • 1.Kf2+?
      • 1...Kxd5
        • 2.c4#
      • 1...Kd7
        • 2.c8Q#
      • 1...Kf7
        • 2.gxf8Q#
      • 1...Kf5!
    • 1.Kd4+?
      • 1...Kf5
        • 2.Re5#
        • 2.g4#
      • 1...Kd7
        • 2.c8Q#
      • 1...Kf7!
    • 1.Kf4+?
      • 1...Kxd5
        • 2.Re5#
        • 2.c4#
      • 1...Kf7
        • 2.gxf8Q#
      • 1...Kd7!
  • Keys
    • 1.Kd3+!
      • 1...Kxd5
        • 2.Ba3#
      • 1...Kf5
        • 2.g4#
      • 1...Kd7
        • 2.c8Q#
      • 1...Kf7
        • 2.gxf8Q#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::P=Q
  • Tries
    • Try
      • K(E);CHECK,P_SPINP(A),S_FLIGHT
      • Vars
        • K(e);S_FLIGHT::P(C)
        • K(e);S_FLIGHT::P=Q
        • K(e);S_FLIGHT::PXS(h)=Q
      • Refutation
        • K(e);P_SPINP(d),S_FLIGHT,XS(I)
    • Try
      • K(E);CHECK,P_SPINP(C),S_FLIGHT
      • Vars
        • K(e);P_SPINP(d),S_FLIGHT,XS(I)::P(A)
        • K(e);S_FLIGHT::P=Q
        • K(e);S_FLIGHT::PXS(h)=Q
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • K(E);CHECK,P_SPINP(M),S_FLIGHT
      • Vars
        • K(e);S_FLIGHT::P=Q
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • K(E);CHECK,P_SPINP(L),S_FLIGHT
      • Vars
        • K(e);S_FLIGHT::PXS(h)=Q
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • K(E);CHECK,P-FLIGHT,P_SPINP(A)
    • Vars
      • K(e);P_SPINP(d),S_FLIGHT,XS(I)::R(G)+B(H)
      • K(e);S_FLIGHT::P(C)
      • K(e);S_FLIGHT::P=Q
      • K(e);S_FLIGHT::PXS(h)=Q
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