MESON Chess Problem Database

Problem Display
PID: 230325 (5n2/1b6/7K/1Bp2p1N/3pkP2/3r4/Q5P1/6B1 w - - 0 1)

Baird, Frederick

Sunday Chronicle, 1948

(First published on Sun Jun 6 1948)

5n2/1b6/7K/1Bp2p1N/3pkP2/3r4/Q5P1/6B1

#2

7 + 7

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Bc6#
    • 1...Bc6
      • 2.Bxc6#
    • 1...Ba8
      • 2.Qxa8#
    • 1...Bc8
      • 2.Bc6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sh7
      • 2.Qe6#
  • Tries
    • 1.Qe2+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Re3!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxb7#
      • 1...Kd5
        • 2.Sf6#
      • 1...Bxa6
        • 2.Bc6#
      • 1...Bd5
        • 2.Bxd3#
      • 1...Bc6
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...Ba8
        • 2.Qxa8#
      • 1...Bc8
        • 2.Bc6#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(f);N_GUARD::B(E)
    • B(f);N_GUARD::B(E),XB(f)
    • B(f);OGATEB::QAB(B),XB(f)
    • S(g);N_GUARD::QAR2(B),XS(g)
    • S(g);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XB(f)
    • Vars
      • K(c);S_FLIGHT::S(F)
      • B(f);N_GUARD,XQ(B)::B(E)
      • B(f);SBLOCK::B(E),XR(a)
      • B(f);OGATEB::QAB(B),XB(f)
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