MESON Chess Problem Database

Problem Display
PID: 194860 (8/2pQ4/K2pR3/3k4/8/4P3/4P3/8 w - - 0 1)

Stubbs, Arthur Goodwin

Good Companions, 1918

8/2pQ4/K2pR3/3k4/8/4P3/4P3/8

#2

5 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb5#
  • Tries
    • 1.Kb5?
      • 1...c5
        • 2.Qxd6#
      • 1...c6+!
  • Keys
    • 1.Re4!
      • 1...Kxe4
        • 2.Qe6#
      • 1...Kc5
        • 2.Qb5#
      • 1...c5
        • 2.Qb7#
      • 1...c6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);N_GUARD::QAR1(E),XP(b)
      • Refutation
        • P(c);CHECK
  • Actual
    • R(D);
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT,XR(D)::QAR2(E)
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(E)
      • P(c);OGATE,SBLOCK::QAB(E)
      • P(c);SBLOCK::QAR2(E)
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