MESON Chess Problem Database

Problem Display
PID: 56791 (R4K2/R1pkpP2/8/4PP2/1PpN4/4P2B/3Q4/1b3q2 w - - 0 1)

Howard, Kenneth Samuel

American Chess Bulletin, 1941

R4K2/R1pkpP2/8/4PP2/1PpN4/4P2B/3Q4/1b3q2

#2

11 + 6

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.fxe6#
  • Tries
    • 1.Sb5+?
      • 1...Qd3
        • 2.Rxc7#
      • 1...Bd3
        • 2.Rxc7#
      • 1...Kc6!
    • 1.Se6+?
      • 1...Qd3
        • 2.Rxc7#
      • 1...Bd3
        • 2.Rxc7#
      • 1...Kc6!
  • Keys
    • 1.Ra6!
      • threat
        • 2.e6#
      • 1...Qxf5
        • 2.Sc2#
      • 1...Bxf5
        • 2.Se2#
      • 1...c5
        • 2.R6a7#
      • 1...c6
        • 2.R6a7#
      • 1...e6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATE::P(G),XP(f)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::R1(H),XP(d)
        • B(a);P_SPINB(a)::R1(H),XP(d)
      • Refutation
        • K(e);N_SPINP(d),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::R1(H),XP(d)
        • B(a);P_SPINB(a)::R1(H),XP(d)
      • Refutation
        • K(e);N_SPINP(d),S_FLIGHT
  • Actual
    • R(H);N_PINP(d)
    • Threat
      • P(F)
    • Vars
      • Q(b);N_GUARD,P_PINP(I),P_SPINQ(b),XP(G)::QAR(A)+S(E)
      • B(a);N_GUARD,P_SPINB(a),XP(G)::QAR(A)+S(E)
      • P(d);OGATEB::R(H)
      • P(f);OGATE::P(G),XP(f)
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