MESON Chess Problem Database

Problem Display
PID: 78813 (1n2B3/2pq4/p7/1kNQ4/N2P4/5K2/3B4/8 w - - 0 1)

Morse, Christopher Jeremy

The Tablet, 1960

(First published on Sat Jun 18 1960)

1n2B3/2pq4/p7/1kNQ4/N2P4/5K2/3B4/8

#2

7 + 5

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Qb3#
  • Tries
    • 1.Sxd7+?
      • 1...c5
        • 2.Sxb8#
      • 1...Kxa4!
    • 1.Bxd7+?
      • 1...Sc6
        • 2.Bxc6#
        • 2.Qb3#
      • 1...c6
        • 2.Qb3#
      • 1...Sxd7!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Qb7#
      • 1...Kb6
        • 2.Qb7#
      • 1...Sc6
        • 2.Sxd7#
      • 1...Qc6
        • 2.Sca4#
      • 1...c6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);N_SPINQ(d),SBLOCK::QAR2(F)
  • Tries
    • Try
      • S(E);CHECK,XQ(d)
      • Vars
        • P(c);P_SPINP(c)::B(G)+S(E),XS(e)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • B(G);CHECK,XQ(d)
      • Vars
        • P(c);P_SPINP(c)::QAR2(F)
      • Refutation
        • S(e);XB(G)
  • Actual
    • S(C);
    • Threat
      • QAR2(F)
    • Vars
      • K(a);N_SPINQ(d),P-FLIGHT::QAR1(F)
      • S(e);N_SPINQ(d),S_CUTP(c)::QAR(F)+S(E),XQ(d)
      • Q(d);P_PINQ(F),S_CUTP(c)::QAR(F)+S(E)
      • P(c);N_SPINQ(d),SBLOCK::QAR2(F)
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