MESON Chess Problem Database

Problem Display
PID: 109044 (2K5/7B/2N2p2/p1Nk1r2/R1q5/1Q6/2R3P1/8 w - - 0 1)

Narraway, James Ephraim

Quebec Chronicle, 1884

2K5/7B/2N2p2/p1Nk1r2/R1q5/1Q6/2R3P1/8

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qxc4#
      • 1...Kxc5
        • 2.Rxa5#
        • 2.Qxc4#
      • 1...Qxb3
        • 2.Bg8#
        • 2.Rd4#
      • 1...Rf4!
    • 1.Kd7?
      • threat
        • 2.Qxc4#
      • 1...Kxc5
        • 2.Rxa5#
      • 1...Qxb3
        • 2.Bg8#
        • 2.Rd4#
      • 1...Rf4!
    • 1.Rd2+?
      • 1...Kxc5
        • 2.Rxc4#
      • 1...Kxc6!
    • 1.Qxc4+?
      • 1...Kd6
        • 2.Se4#
        • 2.Sb7#
        • 2.Qe6#
      • 1...Kxc6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qxc4#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Bg8#
      • 1...Qxb3
        • 2.Bg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • QAB1(C),XQ(a)
      • Refutation
        • R(d);
    • Try
      • K(H);S_FLIGHT
      • Threat
        • QAB1(C),XQ(a)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XS(E)::R(D),XP(b)
      • Refutation
        • R(d);
    • Try
      • R(A);CHECK
      • Vars
        • K(c);N_SPINQ(a),P-FLIGHT,XS(E)::R1(D),XQ(a)
      • Refutation
        • K(c);N_SPINQ(a),S_FLIGHT,XS(F)
    • Try
      • Q(C);CHECK,XQ(a)
      • Refutation
        • K(c);S_FLIGHT,XS(F)
  • Actual
    • S(E);P_SPINS(F)
    • Threat
      • QAB1(C),XQ(a)
    • Vars
      • K(c);OGATEB,P_SPINR(d),S_FLIGHT,XS(E)::QAB1(C)
      • K(c);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • K(c);S_FLIGHT::B(G)
      • Q(a);N_PINS(F),N_SPINQ(a),XQ(C)::B(G)
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