MESON Chess Problem Database

Problem Display
PID: 54838 (7K/8/8/1p6/1Q6/1n1N4/bR6/k7 w - - 0 1)

Gamage, Frederick

Revue d'Echecs, 1904

7K/8/8/1p6/1Q6/1n1N4/bR6/k7

#2

4 + 4

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Tries
    • 1.Rxa2+?
      • 1...Kb1
        • 2.Qxb3#
      • 1...Kxa2!
    • 1.Rd2?
      • 1...Sxd2
        • 2.Qb2#
      • 1...Bb1
        • 2.Qc3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Kb1!
    • 1.Re2?
      • 1...Bb1
        • 2.Qc3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sd2
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Kb1!
    • 1.Rf2?
      • 1...Bb1
        • 2.Qc3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sd2
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Kb1!
    • 1.Rg2?
      • 1...Bb1
        • 2.Qc3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sd2
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Kb1!
    • 1.Rh2?
      • 1...Bb1
        • 2.Qc3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sd2
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Kb1!
    • 1.Qe1+?
      • 1...Bb1
        • 2.Qxb1#
      • 1...Sc1!
    • 1.Qc3?
      • threat
        • 2.Rxb3#
      • 1...Bb1
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
      • 1...Sc1
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rxb5#
      • 1...Sd2
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rxb5#
      • 1...Sd4
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rxb5#
      • 1...Sa5
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rxb5#
      • 1...Sc5
        • 2.Rb3#
        • 2.Rb4#
        • 2.Rxb5#
      • 1...b4!
    • 1.Qxb3?
      • threat
        • 2.Rxa2#
        • 2.Qxa2#
      • 1...Bb1
        • 2.Rxb1#
      • 1...Bxb3!
  • Keys
    • 1.Rc2!
      • 1...Kb1
        • 2.Rc1#
      • 1...Bb1
        • 2.Qc3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sd2
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sa5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK,XB(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c)::QAR2(C),XS(c)
      • Refutation
        • K(a);P-FLIGHT,XR(A)
    • Try
      • R(A);
      • Vars
        • S(c);OGATE,XR(A)::QAB1(C)
        • B(b);SBLOCK::QAB(C)
        • S(c);OGATE::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
    • Try
      • R(A);
      • Vars
        • B(b);SBLOCK::QAB(C)
        • S(c);OGATE::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
    • Try
      • R(A);
      • Vars
        • B(b);SBLOCK::QAB(C)
        • S(c);OGATE::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
    • Try
      • R(A);
      • Vars
        • B(b);SBLOCK::QAB(C)
        • S(c);OGATE::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
    • Try
      • R(A);
      • Vars
        • B(b);SBLOCK::QAB(C)
        • S(c);OGATE::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
    • Try
      • Q(C);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR1(C),XB(b)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(C);
      • Threat
        • QAB(C)+R(A),XS(c)
      • Refutation
        • P(d);
    • Try
      • Q(C);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);N_GUARD::R1(A),XB(b)
      • Refutation
        • B(b);XQ(C)
  • Actual
    • R(A);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(c)::R1(A)
      • B(b);SBLOCK::QAB(C)
      • S(c);OGATE::QAB1(C)
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