MESON Chess Problem Database

Problem Display
PID: 208008 (1Q5K/2R1p3/4B3/2N5/3k4/2p5/5P2/B7 w - - 0 1)

Abbott, Joseph William

English Mechanic and World of Science, 1873

(First published on Fri Feb 14 1873)

1Q5K/2R1p3/4B3/2N5/3k4/2p5/5P2/B7

#2

7 + 3

15239 Valois Notebooks 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bb2?
      • 1...cxb2
        • 2.Qxb2#
      • 1...Ke5!
    • 1.Qb2?
      • threat
        • 2.Qxc3#
      • 1...cxb2
        • 2.Bxb2#
      • 1...Ke5!
  • Keys
    • 1.Kg7!
      • 1...Ke5
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Vars
        • P(a);N_SPINP(a),OGATE,XB(A)::QAB(F),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAB1(F),XP(a)
      • Vars
        • P(a);OGATE,XQ(F)::B(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(G);S_FLIGHT
    • Vars
      • K(b);S_FLIGHT::QAB(F)+R(E)
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