MESON Chess Problem Database

Problem Display
PID: 88907 (6B1/8/1N6/8/1P6/NrPK4/kP1Q4/1R6 w - - 0 1)

Moutecidis, Pavlos

Sorokin, Evgeny Pavlovich

Buletin Problemistic, 1971

6B1/8/1N6/8/1P6/NrPK4/kP1Q4/1R6

#2

9 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kc4?
      • 1...Rxc3+
        • 2.Kxc3#
      • 1...Rxb4+
        • 2.Kxb4#
      • 1...Rxb2
        • 2.Qxb2#
      • 1...Rxa3!
    • 1.Sd5?
      • 1...Rxc3+
        • 2.Sxc3#
      • 1...Rxb2
        • 2.Qxb2#
      • 1...Rxb4
        • 2.Sxb4#
      • 1...Rxa3!
  • Keys
    • 1.Sbc4!
      • 1...Rxc3+
        • 2.bxc3#
      • 1...Rxb2
        • 2.Qxb2#
      • 1...Rxa3
        • 2.Sxa3#
      • 1...Rxb4
        • 2.b3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);N_PINR(b),N_SPINP(E),S_FLIGHT
      • Vars
        • R(b);CHECK,XP(E)::B(I)+K(F),XR(b)
        • R(b);CHECK,XP(G)::B(I)+K(F),XR(b)
        • R(b);OGATE,P_SPINR(b),XP(B)::QAR1(C),XR(b)
      • Refutation
        • R(b);XS(D)
    • Try
      • S(H);N_PINR(b)
      • Vars
        • R(b);CHECK,XP(E)::B(I)+S(H),DCHECK,XR(b)
        • R(b);N_PINP(E),OGATE,P_SPINR(b),XP(B)::QAR1(C),XR(b)
        • R(b);N_PINP(E),XP(G)::B(I)+S(H),DCHECK,XR(b)
      • Refutation
        • R(b);XS(D)
  • Actual
    • S(H);N_PINR(b)
    • Vars
      • R(b);CHECK,OGATE,XP(E)::QAR(C)+P(B),XR(b)
      • R(b);N_PINP(E),OGATE,P_SPINR(b),XP(B)::QAR1(C),XR(b)
      • R(b);XS(D)::B(I)+S(H),XR(b)
      • R(b);N_PINP(E),OGATE,XP(G)::QAR(C)+P(B)
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