MESON Chess Problem Database

Problem Display
PID: 68151 (1N2bB2/n7/qb3Q1K/Pk1P1R1p/1pN4r/1P2p3/4B3/8 w - - 0 1)

Gamage, Frederick

The Chess Review, 1939

1N2bB2/n7/qb3Q1K/Pk1P1R1p/1pN4r/1P2p3/4B3/8

#2

10 + 9

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qc8
      • 2.Qxb6#
    • 1...Qxa5
      • 2.Sa3#
    • 1...Bd4
      • 2.Qxa6#
    • 1...Bxa5
      • 2.Sa3#
      • 2.Qxa6#
      • 2.d6#
    • 1...Bc5
      • 2.Qxa6#
    • 1...Bc7
      • 2.Qxa6#
      • 2.d6#
    • 1...Bd8
      • 2.Qxa6#
      • 2.d6#
  • Tries
    • 1.Sxb6+?
      • 1...Rc4
        • 2.d6#
      • 1...Kxa5!
    • 1.Sd6+?
      • 1...Kc5
        • 2.Se4#
        • 2.Sb5#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Sxe8#
        • 2.Sxa6#
      • 1...Kxa5!
    • 1.Qd6?
      • threat
        • 2.Qxb4#
      • 1...Qxa5
        • 2.Sa3#
      • 1...Bxa5
        • 2.Sa3#
        • 2.Qxa6#
      • 1...Bd4
        • 2.Qxa6#
      • 1...Bc5
        • 2.Qxa6#
      • 1...Bc7
        • 2.Qxa6#
      • 1...Bd8
        • 2.Qxa6#
      • 1...Sc6!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa4#
      • 1...Bd4+
        • 2.Sb6#
      • 1...Bxa5+
        • 2.d6#
      • 1...Bc5+
        • 2.Sd6#
      • 1...Bc7+
        • 2.d6#
      • 1...Bd8+
        • 2.d6#
      • 1...Qxa5
        • 2.Sa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_GUARD::QAR1(G),XB(g)
    • Q(f);SBLOCK,XP(D)::B(A)+S(C),DCHECK
    • B(g);OGATE,P_PINQ(G)::QAB1(G),XQ(f)
  • Tries
    • Try
      • S(C);CHECK,XB(g)
      • Vars
        • R(c);P_SPINR(c)::R(F)+P(E)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • S(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • Q(G);
      • Threat
        • QAR1(G),XP(b)
      • Vars
        • Q(f);SBLOCK,XP(D)::B(A)+S(C),DCHECK
        • B(g);OGATE,P_PINQ(G)::QAB1(G),XQ(f)
      • Refutation
        • S(h);
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • B(g);CHECK,S_CUTR(c)::B(A)+S(C)
      • B(g);CHECK,N_GUARD,XP(D)::R(F)+P(E)
      • B(g);CHECK,SBLOCK::B(A)+S(C),DCHECK
      • B(g);CHECK,N_GUARD::R(F)+P(E)
      • Q(f);SBLOCK,XP(D)::B(A)+S(C),DCHECK
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