MESON Chess Problem Database

Problem Display
PID: 138785 (8/8/8/8/NK6/8/4p2R/R2Bk3 w - - 0 1)

Fokin, Yuri Georgievich

StrateGems 01. Miniature Ty., 2010

8/8/8/8/NK6/8/4p2R/R2Bk3

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Bxe2#
  • Tries
    • 1.Sc3?
      • 1...Kf1
        • 2.Bxe2#
      • 1...exd1Q
        • 2.Rxd1#
      • 1...exd1S
        • 2.Rxd1#
      • 1...exd1B
        • 2.Rxd1#
      • 1...exd1R
        • 2.Rxd1#
      • 1...Kd2!
  • Keys
    • 1.Sb2!
      • 1...Kf1
        • 2.Bxe2#
      • 1...Kd2
        • 2.Rxe2#
      • 1...exd1Q
        • 2.Rxd1#
      • 1...exd1S
        • 2.Rxd1#
      • 1...exd1B
        • 2.Rxd1#
      • 1...exd1R
        • 2.Rxd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(A)+B(B),DCHECK,XP(b)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT::R(A)+B(B),DCHECK,XP(b)
        • P(b);OGATE,P_SPINQ(b),XB(B)::R1(A),XQ(b)
        • P(b);OGATE,P_SPINS(b),XB(B)::R1(A),XS(b)
        • P(b);OGATE,P_SPINB(b),XB(B)::R1(A),XB(b)
        • P(b);OGATE,P_SPINR(b),XB(B)::R1(A),XR(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);P-FLIGHT::R(A)+B(B),DCHECK,XP(b)
      • K(a);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
      • P(b);OGATE,P_SPINQ(b),XB(B)::R1(A),XQ(b)
      • P(b);OGATE,P_SPINS(b),XB(B)::R1(A),XS(b)
      • P(b);OGATE,P_SPINB(b),XB(B)::R1(A),XB(b)
      • P(b);OGATE,P_SPINR(b),XB(B)::R1(A),XR(b)
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