MESON Chess Problem Database

Problem Display
PID: 207566 (8/8/1Q6/3k4/8/N3R3/2p5/7K w - - 0 1)

Anonymous

New York Clipper, 1872

8/8/1Q6/3k4/8/N3R3/2p5/7K

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5+?
      • 1...Kd4
        • 2.Sxc2#
        • 2.Qe5#
      • 1...Kd6!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Sxc2#
      • 1...Kxc6!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Sxc2!
      • 1...Kc4
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::S(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(D)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(B);XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR2(D)
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