MESON Chess Problem Database

Problem Display
PID: 88046 (8/8/8/R2p4/1pk5/4pP2/1K2P3/5Q2 w - - 0 1)

Savournin, Jacques

The Problemist, 1971

8/8/8/R2p4/1pk5/4pP2/1K2P3/5Q2

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qc1#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qd3#
        • 2.Qxd5#
      • 1...d4
        • 2.Qc2#
        • 2.Qb3#
        • 2.Qc1#
        • 2.Qd3#
      • 1...b3!
    • 1.Qe1?
      • 1...b3
        • 2.Qc3#
      • 1...d4
        • 2.Qc1#
      • 1...Kd4!
  • Keys
    • 1.Qa1!
      • 1...Kd4
        • 2.Kb3#
      • 1...b3
        • 2.Qa4#
      • 1...d4
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(b);N_GUARD::QAR1(A)
        • P(d);SBLOCK::QAR(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT::QAB(A)+K(B)
      • P(b);OGATEB::QAR2(A)
      • P(d);SBLOCK::QAR(A)
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