MESON Chess Problem Database

Problem Display
PID: 141342 (8/B2N4/5pQb/8/2P2k2/2P5/6PP/5K2 w - - 0 1)

Thomson, Robert Gavin

Leeds Mercury Weekly Supplement, 1903

(First published on Sat Oct 31 1903)

8/B2N4/5pQb/8/2P2k2/2P5/6PP/5K2

#2

8 + 3

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Qg3+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kf5!
    • 1.Qxf6+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kg4!
    • 1.g4?
      • threat
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...Kf3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sd3#
      • 1...Ke3
        • 2.Qxh6#
      • 1...Ke5
        • 2.Bb8#
      • 1...Bg5
        • 2.Qe4#
      • 1...f5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);CHECK,XP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(B);
      • Threat
        • QAR1(F)
      • Vars
        • P(b);::QAR1(F),XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(a);S_FLIGHT::QAB(F),XB(c)
      • K(a);S_FLIGHT::B(G)
      • B(c);SBLOCK::QAR1(F)
      • P(b);SBLOCK::QAB1(F)
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