MESON Chess Problem Database

Problem Display
PID: 274130 (8/8/8/8/1p6/2p4Q/1Pk5/R3K3 w Q - 0 1)

Ravichandran, MS

Sekar, MSC

diagrammes, 1979

8/8/8/8/1p6/2p4Q/1Pk5/R3K3

#2

4 + 3

5454 Near Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Qf5+?
      • 1...Kxb2
        • 2.Qb1#
      • 1...Kb3!
    • 1.Qh7+?
      • 1...Kxb2
        • 2.Qb1#
      • 1...Kb3!
  • Keys
    • 1.Qe6!
      • 1...Kxb2
        • 2.Qa2#
      • 1...Kd3
        • 2.0-0-0#
      • 1...cxb2
        • 2.Qc4#
      • 1...b3
        • 2.Qe2#

Anticipated by 23539(1937)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAR1(D),XP(b)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XP(C)::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XP(C)::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(C)::QAR1(D)
      • K(a);S_FLIGHT::0-0-0
      • P(b);OGATEB,SBLOCK,XP(C)::QAR2(D)
      • P(c);SBLOCK::QAR2(D)
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