MESON Chess Problem Database

Problem Display
PID: 56899 (2b2K2/2p1BQ2/8/R1r3PN/2R3Pk/b4pp1/5rP1/3B4 w - - 0 1)

Howard, Kenneth Samuel

3rd Prize, Grantham Journal, 1933

2b2K2/2p1BQ2/8/R1r3PN/2R3Pk/b4pp1/5rP1/3B4

#2

10 + 8

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.gxf5#
    • 1...Bf5
      • 2.g6#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Qh5#
      • 1...Kxg5
        • 2.Sg8#
        • 2.Qh5#
      • 1...Rxg5!
    • 1.Sg7?
      • threat
        • 2.Qh5#
      • 1...Rf5
        • 2.gxf5#
      • 1...fxg2!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Sg7#
      • 1...Rf5+
        • 2.gxf5#
      • 1...fxg2+
        • 2.Sf4#
      • 1...Rxc4
        • 2.Sf6#
      • 1...Rc6
        • 2.Sf6#
      • 1...Bf5
        • 2.g6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);OGATE,P_PINB(H),P_PINQ(I)::R(C)+P(D),XR(f)
    • B(h);S_CUTR(f)::B(H)+P(F)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Refutation
        • R(f);P_PINB(H),XP(F)
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • R(f);OGATE,P_PINB(H),P_PINQ(I)::R(C)+P(D),XR(f)
      • Refutation
        • P(c);P_PINQ(I),XP(B)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+S(G)
    • Vars
      • R(f);CHECK,OGATE,P_PINB(H)::R(C)+P(D),XR(f)
      • P(c);CHECK,XP(B)::QAR(I)+S(G)
      • R(f);P_PINB(H),XR(C)::QAR(I)+S(G)
      • R(f);P_PINB(H)::QAR(I)+S(G)
      • B(h);S_CUTR(f)::B(H)+P(F)
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