MESON Chess Problem Database

Problem Display
PID: 71243 (4R2Q/2p2P2/2k5/2P5/8/1K1NP3/8/8 w - - 0 1)

Wermelinger, Charles

Le Probleme, 1948

4R2Q/2p2P2/2k5/2P5/8/1K1NP3/8/8

#2

7 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qh1#
    • 1...Kd7
      • 2.Se5#
  • Tries
    • 1.Kb4?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7
        • 2.Se5#
      • 1...Kb7!
    • 1.Kc4?
      • 1...Kd7
        • 2.Se5#
      • 1...Kb7!
    • 1.Rb8?
      • 1...Kd7
        • 2.Qe8#
      • 1...Kd5!
    • 1.Qd4?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kb7!
    • 1.Qh1+?
      • 1...Kd7
        • 2.Se5#
        • 2.Qd5#
      • 1...Kb5!
    • 1.Qh4?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5
        • 2.Qh1#
        • 2.Qe4#
      • 1...Kd7
        • 2.Se5#
      • 1...Kb7!
  • Keys
    • 1.Qa1!
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5
        • 2.Qh1#
      • 1...Kb7
        • 2.Qa8#
      • 1...Kd7
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(G)
    • K(a);S_FLIGHT::S(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAB1(G)
      • K(a);S_FLIGHT::QAB(G)
      • K(a);S_FLIGHT::S(B)
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