MESON Chess Problem Database

Problem Display
PID: 144008 (6b1/2Q5/4N1R1/1q1k3K/2pP3R/b6p/6r1/7B w - - 0 1)

Boswell, Edward

Smith, James Alfred John

Bristol Times and Mirror, 1932

(First published on Sat Jan 9 1932)

6b1/2Q5/4N1R1/1q1k3K/2pP3R/b6p/6r1/7B

#2

7 + 7

14868 Pirnie Collection 2012
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Qe5#
    • 1...h2
      • 2.Bxg2#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Rg5#
        • 2.Qe5#
      • 1...Be6
        • 2.Qe5#
      • 1...Qd7
        • 2.Qe5#
      • 1...Qb1
        • 2.Qe5#
        • 2.Qc6#
      • 1...Qb8
        • 2.Rg5#
        • 2.Qc6#
      • 1...Bc1
        • 2.Rd6#
        • 2.Qe5#
        • 2.Qd6#
      • 1...Bd6
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Be7
        • 2.Qe5#
      • 1...Bf7
        • 2.Qe5#
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qe5#
        • 2.Qf7#
      • 1...c3
        • 2.Rg5#
      • 1...Qe8!
    • 1.Qc5+?
      • 1...Bxc5
        • 2.Sc7#
      • 1...Qxc5!
    • 1.Qd7+?
      • 1...Bd6
        • 2.Sc7#
        • 2.Rg5#
      • 1...Qxd7!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Sc7#
      • 1...Kc6+
        • 2.Sc5#
      • 1...Kd6+
        • 2.Sg5#
      • 1...Bd6
        • 2.Qf3#

This anticipates 59965(1938)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(e);SBLOCK::QAR1(G)
    • P(c);N_GUARD::B(A),XR(a)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::QAR1(G)
        • Q(e);::QAR1(G)
        • B(b);::QAR1(G)
        • P(d);::R(F)
      • Refutation
        • Q(e);P_PINR(F)
    • Try
      • Q(G);CHECK
      • Vars
        • B(b);XQ(G)::S(E)
      • Refutation
        • Q(e);XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • Q(e);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+S(E),DCHECK
    • Vars
      • K(f);CHECK,S_FLIGHT::R(F)+S(E)
      • K(f);CHECK,N_SPINR(a),P-FLIGHT::R(F)+S(E)
      • B(b);SBLOCK::QAB(G)
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