MESON Chess Problem Database

Problem Display
PID: 17354 (3R2KB/8/2PN4/1QP1NP2/1p1kP1R1/br3pP1/qp1p2r1/8 w - - 0 1)

Gamage, Frederick

1st Prize=, Christian Science Monitor (Cross Check), 1946

3R2KB/8/2PN4/1QP1NP2/1p1kP1R1/br3pP1/qp1p2r1/8

#2

12 + 9

14773 The Best American Chess Problems of 1946 1948
5397 Frederick Gamage (Prcic) 2004
133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qd3#
      • 2.Qc4#
    • 1...Rc3+
      • 2.Sdc4#
    • 1...Rd3+
      • 2.Sec4#
    • 1...Re3+
      • 2.Sef7#
  • Tries
    • 1.Sb7+?
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke3!
    • 1.Sdf7+?
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke3!
    • 1.Sc8+?
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke3!
    • 1.Se8+?
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke3!
    • 1.Rf4?
      • threat
        • 2.Sg4#
      • 1...Rc3+
        • 2.Sdc4#
      • 1...Rd3+
        • 2.Sec4#
      • 1...Re3+
        • 2.Sef7#
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke3
        • 2.Sg4#
      • 1...Rh2!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Sg4#
      • 1...Rc3+
        • 2.Sdc4#
      • 1...Rd3+
        • 2.Sec4#
      • 1...Re3+
        • 2.Sef7#
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke3
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(f);CHECK,SBLOCK::R(J)+S(I)
    • R(f);CHECK,SBLOCK::B(L)+S(F)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • R(C);P_SPINP(A)
      • Threat
        • B(L)+S(F)
      • Vars
        • R(f);CHECK,SBLOCK::R(J)+S(I)
        • R(f);CHECK,SBLOCK::B(L)+S(F)
        • K(i);S_FLIGHT::S(F)
      • Refutation
        • R(d);N_PINP(A)
  • Actual
    • R(C);P_SPINP(A)
    • Threat
      • B(L)+S(F)
    • Vars
      • R(f);CHECK,SBLOCK::R(J)+S(I)
      • R(f);CHECK,SBLOCK::B(L)+S(F)
      • K(i);S_FLIGHT::S(F)
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