MESON Chess Problem Database

Problem Display
PID: 228815 (8/1R3Pp1/p1PP2Bp/K2k3P/3N1p1Q/B1P5/6N1/4R3 w - - 0 1)

Pierce, James

English Mechanic and World of Science, 1878

(First published on Fri Oct 25 1878)

8/1R3Pp1/p1PP2Bp/K2k3P/3N1p1Q/B1P5/6N1/4R3

#2

13 + 5

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Se3+?
      • 1...Ke5
        • 2.Re7#
        • 2.Qe7#
      • 1...fxe3!
    • 1.Sc2?
      • 1...Kxc6
        • 2.Be4#
      • 1...f3
        • 2.Qe4#
      • 1...Kc4!
    • 1.Sb3?
      • 1...Kxc6
        • 2.Be4#
      • 1...f3
        • 2.Qe4#
      • 1...Kc4!
    • 1.Sf3?
      • 1...Kxc6
        • 2.Be4#
      • 1...Kc4!
    • 1.Se6?
      • 1...Kxc6
        • 2.Be4#
      • 1...f3
        • 2.Qe4#
      • 1...Kc4!
    • 1.Bd3?
      • threat
        • 2.Sxf4#
      • 1...f3
        • 2.Sf4#
        • 2.Qe4#
        • 2.c4#
      • 1...g5!
    • 1.Be4+?
      • 1...Ke5
        • 2.Bf3#
        • 2.Re7#
        • 2.Qe7#
        • 2.Qxf4#
      • 1...Kc4!
    • 1.Re4?
      • 1...f3
        • 2.Se3#
      • 1...Kc4!
    • 1.Re5+?
      • 1...Kc4
        • 2.Rc5#
      • 1...Kxe5!
    • 1.Re6?
      • 1...f3
        • 2.Se3#
      • 1...Kc4!
    • 1.Ree7?
      • 1...f3
        • 2.Se3#
      • 1...Kc4!
    • 1.Re8?
      • 1...f3
        • 2.Se3#
      • 1...Kc4!
    • 1.Rb5+?
      • 1...Kc4
        • 2.Rc5#
      • 1...axb5!
    • 1.Rbe7?
      • 1...f3
        • 2.Se3#
      • 1...Kc4!
    • 1.Qg5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...hxg5!
    • 1.Qh2?
      • 1...f3
        • 2.Se3#
      • 1...Kc4!
  • Keys
    • 1.Se2!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke5
        • 2.Sexf4#
      • 1...Kxc6
        • 2.Be4#
      • 1...Ke6
        • 2.Sexf4#
      • 1...f3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • P(a);XS(B)
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT,XP(I)::B(K)
        • P(a);OGATE::QAB1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT,XP(I)::B(K)
        • P(a);OGATE::QAB1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT,XP(I)::B(K)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT,XP(I)::B(K)
        • P(a);OGATE::QAB1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • B(K);
      • Threat
        • S(B),XP(a)
      • Refutation
        • P(e);
    • Try
      • B(K);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(A)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(L);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(L)
      • Refutation
        • P(c);XR(L)
    • Try
      • R(L);
      • Vars
        • P(a);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);
      • Vars
        • P(a);N_GUARD::S(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(B)
      • K(b);P-FLIGHT::R(A)+S(E),XP(a)
      • K(b);S_FLIGHT,XP(I)::B(K)
      • K(b);S_FLIGHT::R(A)+S(E),DCHECK,XP(a)
      • P(a);OGATE::QAB1(F)
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