MESON Chess Problem Database

Problem Display
PID: 10260 (2BB1Q2/2p5/2p1Pbp1/2P1PkP1/R4N2/8/6K1/5R2 w - - 0 1)

Mansfield, Comins

4th Prize, Europe Echecs, 1963

2BB1Q2/2p5/2p1Pbp1/2P1PkP1/R4N2/8/6K1/5R2

#2

11 + 5

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qxf6#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Qxf6#
      • 1...Kxe5
        • 2.Qxf6#
      • 1...Kxg5!
    • 1.Kg3?
      • threat
        • 2.Qxf6#
      • 1...Kxe5
        • 2.Qxf6#
      • 1...Kxg5!
    • 1.Kh3?
      • threat
        • 2.Qxf6#
      • 1...Kxe5
        • 2.Qxf6#
      • 1...Kxg5!
    • 1.Sxg6+?
      • 1...Kxg6
        • 2.Qh6#
      • 1...Kxg5!
    • 1.Qh6?
      • threat
        • 2.Sd3#
        • 2.Sxg6#
      • 1...Kg4
        • 2.Se2#
        • 2.Sd3#
        • 2.Sh3#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sxg6#
        • 2.e7#
      • 1...Bxe5
        • 2.Qh3#
        • 2.e7#
      • 1...Bxg5
        • 2.Qxg5#
      • 1...Kxe5!
    • 1.e7+?
      • 1...Kxe5
        • 2.Bxc7#
        • 2.Re1#
        • 2.Qxf6#
      • 1...Kxg5!
  • Keys
    • 1.Qh8!
      • 1...Kg4
        • 2.Sh3#
      • 1...Kxe5
        • 2.Qxf6#
      • 1...Kxg5
        • 2.Sh3#
      • 1...Bxe5
        • 2.Qh3#
      • 1...Bxg5
        • 2.e7#
      • 1...Bxd8
        • 2.Sh3#
      • 1...Bxh8
        • 2.Sd3#
      • 1...Be7
        • 2.Sh3#
      • 1...Bg7
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINB(c),P-FLIGHT,XP(F)::QAB1(K),XB(c)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR1(K),XB(c)
      • Vars
        • K(a);N_SPINB(c),P-FLIGHT,XP(F)::QAB1(K),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR1(K),XB(c)
      • Vars
        • K(a);N_SPINB(c),P-FLIGHT,XP(F)::QAB1(K),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR1(K),XB(c)
      • Vars
        • K(a);N_SPINB(c),P-FLIGHT,XP(F)::QAB1(K),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • S(D);CHECK,XP(d)
      • Vars
        • K(a);N_SPINB(c),S_FLIGHT,XS(D)::QAR1(K)
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • Q(K);N_PINB(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);OGATE,XP(G)::QAR1(K),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • P(H);CHECK
      • Refutation
        • K(a);N_SPINB(c),P-FLIGHT,XP(G)
  • Actual
    • Q(K);N_PINB(c)
    • Vars
      • K(a);S_FLIGHT::R(C)+S(D)
      • K(a);P-FLIGHT,P_SPINB(c),XP(F)::QAB1(K),XB(c)
      • K(a);P-FLIGHT,P_SPINB(c),XP(G)::S(D)
      • B(c);SBLOCK,XP(F)::QAB(K)
      • B(c);SBLOCK,XP(G)::B(I)+P(H)
      • B(c);XB(J)::R(A)+S(D)
      • B(c);XQ(K)::R(A)+S(D)
      • B(c);::R(A)+S(D)
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