MESON Chess Problem Database

Problem Display
PID: 16566 (7N/3K2pk/7N/8/3R4/8/1QRB4/1B6 w - - 0 1)

Gamage, Frederick

1st Prize, Chess Correspondent (Meredith Ty.), 1941

7N/3K2pk/7N/8/3R4/8/1QRB4/1B6

#2

8 + 2

5064 100 Years of the American Two-move Chess Problem 1962
5063 Spectacular Chess Problems 1965
3310 2345 Chess Problems 1997
5397 Frederick Gamage (Prcic) 2004
133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh8
      • 2.Rc8#
  • Tries
    • 1.Rc1+?
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qb8#
      • 1...g6!
    • 1.Rc3+?
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qb8#
      • 1...g6!
    • 1.Rcc4+?
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qb8#
      • 1...g6!
    • 1.Rc5+?
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qb8#
      • 1...g6!
    • 1.Rc6+?
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qb8#
      • 1...g6!
    • 1.Rc7+?
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qb8#
      • 1...g6!
    • 1.Ra4?
      • 1...Kxh8
        • 2.Rc8#
      • 1...gxh6
        • 2.Rc8#
      • 1...g5
        • 2.Rc6#
      • 1...g6!
    • 1.Rb4?
      • 1...Kxh8
        • 2.Rc8#
      • 1...gxh6
        • 2.Rc8#
      • 1...g5
        • 2.Rc6#
      • 1...g6!
    • 1.Rg4?
      • threat
        • 2.Qxg7#
      • 1...Kxh8
        • 2.Rc8#
        • 2.Qxg7#
      • 1...gxh6
        • 2.Rc1#
        • 2.Rcc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rc8#
        • 2.Qg7#
      • 1...g5
        • 2.Rc6#
      • 1...g6!
    • 1.Rh4?
      • 1...Kxh8
        • 2.Rc8#
      • 1...gxh6
        • 2.Rc8#
      • 1...g5
        • 2.Rc1#
        • 2.Rcc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...g6!
    • 1.Rd5?
      • 1...Kxh8
        • 2.Rc8#
      • 1...gxh6
        • 2.Rc8#
      • 1...g5
        • 2.Rc6#
      • 1...g6!
    • 1.Rd6?
      • 1...Kxh8
        • 2.Rc8#
      • 1...gxh6
        • 2.Rc8#
      • 1...g5
        • 2.Rc1#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rcc6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...g6!
  • Keys
    • 1.Rf4!
      • 1...Kxh6
        • 2.Rh4#
      • 1...Kxh8
        • 2.Rc8#
      • 1...gxh6
        • 2.Rc8#
      • 1...g6
        • 2.Rf7#
      • 1...g5
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XS(H)::R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • R(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • R(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • R(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • R(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • R(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • R(E);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a),XS(H)::R(C)
        • P(a);N_GUARD,XS(F)::B(A)+R(C)
        • P(a);N_GUARD::B(A)+R(C)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a),XS(H)::R(C)
        • P(a);N_GUARD,XS(F)::B(A)+R(C)
        • P(a);N_GUARD::B(A)+R(C)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Threat
        • QAR1(B),XP(a)
      • Vars
        • P(a);N_GUARD::B(A)+R(C)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a),XS(H)::R(C)
        • P(a);N_GUARD,P_SPINP(a),XS(F)::B(A)+R(C)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a),XS(H)::R(C)
        • P(a);N_GUARD,XS(F)::B(A)+R(C)
        • P(a);N_GUARD::B(A)+R(C)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a),XS(H)::R(C)
        • P(a);N_GUARD,XS(F)::B(A)+R(C)
      • Refutation
        • P(a);
  • Actual
    • R(E);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XS(F)::B(D)+R(E),DCHECK
      • K(b);P-FLIGHT,P_SPINP(a),XS(H)::R(C)
      • P(a);N_GUARD,SBLOCK,XS(F)::B(A)+R(C)
      • P(a);OGATEB::R(E)
      • P(a);N_GUARD::B(A)+R(C)
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