MESON Chess Problem Database

Problem Display
PID: 7398 (4Q3/3P4/1p6/1k6/8/1K6/8/8 w - - 0 1)

Radchenko, Sergei Vladimirovich

StrateGems, 1999

4Q3/3P4/1p6/1k6/8/1K6/8/8

#2

3 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.d8Q+?
      • 1...Ka5
        • 2.Qa4#
        • 2.Qa8#
      • 1...Ka6
        • 2.Qa8#
      • 1...Kc5!
  • Keys
    • 1.d8S+!
      • 1...Ka5
        • 2.Qa4#
      • 1...Kc5
        • 2.Qe5#
      • 1...Ka6
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);CHECK
    • Vars
      • K(a);OGATE,P-FLIGHT::QAR1(C)
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);OGATE,S_FLIGHT::QAR2(C)
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