MESON Chess Problem Database

Problem Display
PID: 11219 (8/8/3p4/nQ1P2B1/2p1kP1R/2K5/3P4/5R2 w - - 0 1)

Thomson, Robert Gavin

Chess, 1937

8/8/3p4/nQ1P2B1/2p1kP1R/2K5/3P4/5R2

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qb1#
  • Tries
    • 1.Re1+?
      • 1...Kf5
        • 2.Qb1#
      • 1...Kf3!
    • 1.Qxc4+?
      • 1...Kf5
        • 2.Qd3#
      • 1...Sxc4!
    • 1.Qe8+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kxd5!
    • 1.d3+?
      • 1...Ke3
        • 2.Qe8#
      • 1...cxd3
        • 2.Qxd3#
      • 1...Kf5!
  • Keys
    • 1.d4!
      • threat
        • 2.f5#
      • 1...Ke3
        • 2.Qe8#
      • 1...Kf5
        • 2.Qb1#
      • 1...cxd4 ep
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(F)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(F)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • P(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(F)
        • P(a);OGATE,XP(B)::QAB1(F),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Threat
      • R(E)+P(D)
    • Vars
      • K(b);P-FLIGHT::QAR(F)
      • K(b);S_FLIGHT::QAB(F)
      • P(a);EP,OGATE,XP(B)::QAB1(F),XP(a)
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