MESON Chess Problem Database

Problem Display
PID: 104459 (8/2p4b/R5N1/Qq6/2kP4/1NP1R3/1pp5/5K2 w - - 0 1)

Mladenovic, Slobodan

Petkov, Petko Andonov

Mat, 1988

8/2p4b/R5N1/Qq6/2kP4/1NP1R3/1pp5/5K2

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb3+
      • 2.Qxb5#
    • 1...Qa4
      • 2.Sd2#
    • 1...Qxa6
      • 2.Sd2#
    • 1...Qc6
      • 2.Sd2#
    • 1...Qd7
      • 2.Sd2#
    • 1...Qe8
      • 2.Sd2#
    • 1...Qxb3
      • 2.Se5#
      • 2.Rc6#
      • 2.Qc5#
    • 1...Qb4
      • 2.Sd2#
    • 1...Qd5
      • 2.Sd2#
      • 2.Qb4#
      • 2.Qa4#
    • 1...Qe5
      • 2.Sd2#
    • 1...Qg5
      • 2.Sd2#
    • 1...Qh5
      • 2.Sd2#
    • 1...Qb6
      • 2.Sd2#
    • 1...Qb7
      • 2.Sd2#
    • 1...Qb8
      • 2.Sd2#
  • Tries
    • 1.Rc6+?
      • 1...Kxb3+
        • 2.c4#
      • 1...Kd5+
        • 2.Qxb5#
      • 1...Qxc6
        • 2.Sd2#
      • 1...Qc5!
  • Keys
    • 1.Se5+!
      • 1...Kxb3+
        • 2.Qxb5#
      • 1...Kd5+
        • 2.c4#
      • 1...Qxe5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • K(c);CHECK,S_FLIGHT,XS(B)::QAR2(F),XQ(d)
    • Q(d);::S(B)
    • Q(d);XR(G)::S(B)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(c);CHECK,OGATE,S_FLIGHT,XS(B)::R(D)+P(C)
        • K(c);CHECK,P_SPINQ(d),S_FLIGHT::QAR2(F),XQ(d)
        • Q(d);XR(G)::S(B)
      • Refutation
        • Q(d);P_SPINQ(d)
  • Actual
    • S(H);CHECK
    • Vars
      • K(c);CHECK,S_FLIGHT,XS(B)::QAR2(F),XQ(d)
      • K(c);CHECK,OGATE,P_SPINQ(d),S_FLIGHT::P(C)
      • Q(d);XS(H)::S(B)
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