MESON Chess Problem Database

Problem Display
PID: 222875 (2r3b1/B1q5/4p3/N1p1R1Q1/3k1P2/P4B2/KnPb4/8 w - - 0 1)

Finch, James Gayler

English Mechanic and World of Science, 1877

(First published on Fri Mar 2 1877)

2r3b1/B1q5/4p3/N1p1R1Q1/3k1P2/P4B2/KnPb4/8

#2

9 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Bc3
      • 2.Re4#
      • 2.Qg1#
  • Tries
    • 1.Qg1+?
      • 1...Be3
        • 2.Qxe3#
      • 1...Kc3!
  • Keys
    • 1.Rxc5!
      • threat
        • 2.Rc4#
        • 2.Rxc7#
      • 1...e5+
        • 2.Rc4#
      • 1...Ke3
        • 2.Rc3#
      • 1...Qxf4
        • 2.Rc4#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rxc8#
      • 1...Qxa5
        • 2.Qe5#
      • 1...Qxc5
        • 2.Qe5#
      • 1...Qxa7
        • 2.Qe5#
      • 1...Bxa5
        • 2.Qg1#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Qe5
        • 2.Rc4#
        • 2.Qxe5#
      • 1...Qb6
        • 2.Qe5#
      • 1...Qd6
        • 2.Rc4#
      • 1...Qb8
        • 2.Rc4#
      • 1...Qd8
        • 2.Rc4#
        • 2.Rc7#
        • 2.Qe5#
      • 1...Qc6
        • 2.Rc4#
        • 2.Rxc6#
        • 2.Qe5#
      • 1...Qb7
        • 2.Rc4#
        • 2.Qe5#
      • 1...Qd7
        • 2.Rc4#
        • 2.Rc7#
        • 2.Qe5#
      • 1...Qe7
        • 2.Rc4#
        • 2.Qe5#
      • 1...Qf7
        • 2.Rc4#
        • 2.Rc7#
        • 2.Qe5#
      • 1...Qg7
        • 2.Rc4#
        • 2.Rc7#
      • 1...Qh7
        • 2.Rc4#
        • 2.Rc7#
        • 2.Qe5#
      • 1...Ra8
        • 2.Rc4#
      • 1...Rb8
        • 2.Rc4#
      • 1...Bb4
        • 2.Rc4#
        • 2.Qg1#
      • 1...Sd3
        • 2.Rc4#
      • 1...Sa4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 1
  • Sets
    • Q(f);OGATE,XR(G)::QAB1(H),XQ(f)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAB1(H),XB(b)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
  • Actual
    • R(G);XP(d)
    • Threat
      • DUALS(2)
    • Vars
      • P(e);CHECK::B(I)+R(G),DCHECK
      • K(c);S_FLIGHT::B(I)+R(G),DCHECK
      • Q(f);N_GUARD,P_PINP(C),XS(F)::QAB1(H)
      • Q(f);N_GUARD,P_SPINQ(f),XR(G)::QAB1(H)
      • Q(f);N_GUARD,XB(I)::QAB1(H)
      • B(b);N_GUARD,XS(F)::QAB(H)
      • S(a);::B(I)+R(G),DCHECK,XS(a)
      • Q(f);N_GUARD::QAB1(H)
      • Q(f);::B(I)+R(G),DCHECK
      • R(g);::B(I)+R(G),DCHECK
      • S(a);::B(I)+R(G),DCHECK
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