MESON Chess Problem Database

Problem Display
PID: 160576 (8/8/3K4/3N4/8/8/4pR2/1R1Nk3 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1987

8/8/3K4/3N4/8/8/4pR2/1R1Nk3

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.S1e3+?
      • 1...Kd2
        • 2.Rd1#
      • 1...Kxf2!
    • 1.Sb4?
      • 1...exd1Q+
        • 2.Sd3#
      • 1...exd1R+
        • 2.Sd3#
      • 1...exd1S
        • 2.Sd3#
      • 1...exd1B
        • 2.Sd3#
      • 1...Kd2!
    • 1.Rxe2+?
      • 1...Kf1
        • 2.S1c3#
      • 1...Kxe2!
  • Keys
    • 1.Sf4!
      • 1...exd1Q+
        • 2.Sd3#
      • 1...exd1R+
        • 2.Sd3#
      • 1...Kd2
        • 2.Rxe2#
      • 1...exd1S
        • 2.Sd3#
      • 1...exd1B
        • 2.Sd3#

FEATURES

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