MESON Chess Problem Database

Problem Display
PID: 156915 (R5N1/1p1n4/1pN5/3krb1R/P7/BP2P1QB/1K1P4/8 w - - 0 1)

Adam, Juraj

Source?, 1990

R5N1/1p1n4/1pN5/3krb1R/P7/BP2P1QB/1K1P4/8

#2

12 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qd6#
    • 1...Be4
      • 2.Sce7#
      • 2.Sge7#
    • 1...Be6
      • 2.Bg2#
      • 2.Qg2#
      • 2.Qf3#
  • Tries
    • 1.Bg2+?
      • 1...Ke6
        • 2.Sd8#
      • 1...Re4
        • 2.Qd6#
      • 1...Be4!
    • 1.Qxe5+?
      • 1...Kxc6
        • 2.Se7#
        • 2.Rc8#
        • 2.Qd6#
      • 1...Sxe5!
    • 1.Qg2+?
      • 1...Ke6
        • 2.Sd8#
      • 1...Be4
        • 2.Sce7#
        • 2.Sge7#
      • 1...Re4!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Sd8#
      • 1...Be4
        • 2.Sce7#
        • 2.Sge7#
      • 1...Re4!
  • Keys
    • 1.e4+!
      • 1...Kxe4
        • 2.Bg2#
      • 1...Kxc6
        • 2.Rc8#
      • 1...Ke6
        • 2.Sd8#
      • 1...Rxe4
        • 2.Qd6#
      • 1...Bxe4
        • 2.Sge7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,P_SPINB(c),SBLOCK::QAR1(F)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • K(a);S_FLIGHT::S(J)
        • R(b);OGATE,P_SPINB(c),P_SPINR(b)::QAR1(F)
      • Refutation
        • B(c);P_SPINB(c),P_SPINR(b)
    • Try
      • Q(F);CHECK,XR(b)
      • Refutation
        • S(f);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P_SPINB(c),S_FLIGHT::S(J)
      • Refutation
        • R(b);P_SPINB(c),P_SPINR(b)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P_SPINB(c),S_FLIGHT::S(J)
      • Refutation
        • R(b);P_SPINB(c),P_SPINR(b)
  • Actual
    • P(E);CHECK
    • Vars
      • K(a);S_FLIGHT,XP(E)::B(G)
      • K(a);S_FLIGHT,XS(J)::R(K)
      • K(a);P_SPINB(c),S_FLIGHT::S(J)
      • R(b);OGATE,P_SPINB(c),SBLOCK,XP(E)::QAR1(F)
      • B(c);P_SPINR(b),SBLOCK,XP(E)::S(L)
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