MESON Chess Problem Database

Problem Display
PID: 205552 (1K6/3pp3/2Pk4/8/4Q3/8/5B2/8 w - - 0 1)

Somma, Francesco

Tribune de Geneve, 1925

1K6/3pp3/2Pk4/8/4Q3/8/5B2/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Kxc6
        • 2.Qc5#
      • 1...Ke6!
    • 1.Qe5+?
      • 1...Kxc6
        • 2.Qc5#
      • 1...Kxe5!
  • Keys
    • 1.Qf5!
      • 1...Kxc6
        • 2.Qc5#
      • 1...dxc6
        • 2.Bc5#
      • 1...e5
        • 2.Qxd7#
      • 1...e6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(C)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(C)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAR1(B)
      • P(b);SBLOCK,XP(C)::B(A)
      • P(c);SBLOCK::QAR1(B),XP(b)
      • P(c);SBLOCK::QAB1(B)
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