MESON Chess Problem Database

Problem Display
PID: 236529 (k7/b1r5/npPB4/2pQ4/1pN5/NK6/8/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Rochade Europa, 2009

k7/b1r5/npPB4/2pQ4/1pN5/NK6/8/8

#2

6 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Qg8#
    • 1...Rxc6
      • 2.Qxc6#
    • 1...Rb7
      • 2.cxb7#
    • 1...Rd7
      • 2.cxd7#
      • 2.c7#
    • 1...Re7
      • 2.c7#
    • 1...Rf7
      • 2.c7#
    • 1...Rg7
      • 2.c7#
    • 1...Rh7
      • 2.c7#
    • 1...Rc8
      • 2.c7#
  • Tries
    • 1.Sxb6+?
      • 1...Kb8
        • 2.Qg8#
      • 1...Bxb6!
  • Keys
    • 1.Sb5!
      • 1...Kb8
        • 2.Qg8#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Bb8
        • 2.Sxb6#
      • 1...Rb7
        • 2.cxb7#
      • 1...Rd7
        • 2.cxd7#
        • 2.c7#
      • 1...Re7
        • 2.c7#
      • 1...Rf7
        • 2.c7#
      • 1...Rg7
        • 2.c7#
      • 1...Rh7
        • 2.c7#
      • 1...Rc8
        • 2.c7#
      • 1...Sb8
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(g);P-FLIGHT,P_SPINR(f)::QAR(D)
    • R(f);OGATE,P_SPINR(f),XP(E)::QAB(D),XR(f)
    • R(f);OGATE::P(E),XR(f)
    • R(f);OGATE::QAB(D)+P(E)
    • R(f);OGATE,SBLOCK::QAB(D)+P(E)
  • Tries
    • Try
      • S(C);CHECK,XP(d)
      • Vars
        • K(g);P-FLIGHT,P_SPINR(f)::QAR(D)
      • Refutation
        • B(e);XS(C)
  • Actual
    • S(A);
    • Vars
      • K(g);P-FLIGHT,P_SPINR(f)::QAR(D)
      • R(f);OGATE,P_SPINR(f),XP(E)::QAB(D),XR(f)
      • B(e);N_GUARD,SBLOCK::S(C),XP(d)
      • R(f);OGATE::P(E),XR(f)
      • R(f);OGATE::QAB(D)+P(E)
      • R(f);OGATE,SBLOCK::QAB(D)+P(E)
      • S(c);N_GUARD,SBLOCK::S(A),XR(f)
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