MESON Chess Problem Database

Problem Display
PID: 173032 (6Q1/P4K2/2PN1P2/p4p2/p2k1N1p/P6P/R1P2R2/7B w - - 0 1)

Aloni, Yoel

5th Comm., Israel Ring Ty., 1989

6Q1/P4K2/2PN1P2/p4p2/p2k1N1p/P6P/R1P2R2/7B

#2

13 + 5

721 Variantim 1991

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2+?
      • 1...Kc3
        • 2.Rd3#
      • 1...Kc5
        • 2.Qg1#
      • 1...Ke5
        • 2.Sg6#
      • 1...Ke3!
    • 1.Qg1?
      • 1...Kc3
        • 2.Qa1#
      • 1...Ke3
        • 2.Sxf5#
      • 1...Kc5
        • 2.Rd2#
      • 1...Ke5!
    • 1.Qd8?
      • 1...Ke3
        • 2.Qb6#
      • 1...Kc5
        • 2.Se6#
      • 1...Ke5
        • 2.Sc4#
      • 1...Kc3!
    • 1.Qe8?
      • 1...Kc3
        • 2.Qe3#
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Qb8!
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke3
        • 2.Qb6#
      • 1...Kc5
        • 2.Se6#
      • 1...Ke5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(D)
        • K(b);S_FLIGHT::QAB(M)
        • K(b);S_FLIGHT::S(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(M);
      • Vars
        • K(b);S_FLIGHT::QAB(M)
        • K(b);S_FLIGHT::S(I),XP(e)
        • K(b);S_FLIGHT::QAB(M)+R(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(M);
      • Vars
        • K(b);S_FLIGHT::QAB(M)
        • K(b);S_FLIGHT::S(G)
        • K(b);S_FLIGHT::S(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(M);
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(M);
    • Vars
      • K(b);S_FLIGHT::QAB1(M)
      • K(b);S_FLIGHT::QAB(M)
      • K(b);S_FLIGHT::S(G)
      • K(b);S_FLIGHT::QAB(M)+S(I)
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