MESON Chess Problem Database

Problem Display
PID: 194421 (B4r2/8/1P1p1rpN/1KPRN1P1/3pkB1Q/3p1p2/5p2/5n2 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Shakhmatnaya kompozitsiya, 2019

B4r2/8/1P1p1rpN/1KPRN1P1/3pkB1Q/3p1p2/5p2/5n2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5
      • 2.Rxe5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Rxd4#
      • 1...Kxd5
        • 2.Sd8#
      • 1...dxc5
        • 2.Re5#
      • 1...Rxf4!
    • 1.Sd7?
      • threat
        • 2.Re5#
      • 1...Rxa8
        • 2.Sxf6#
      • 1...d2!
    • 1.Qxf2?
      • threat
        • 2.Rxd4#
        • 2.Qxd4#
        • 2.Qxf3#
      • 1...Rxf4
        • 2.Qxd4#
      • 1...dxc5
        • 2.Rxd4#
        • 2.Qxf3#
      • 1...dxe5
        • 2.Rxd4#
      • 1...Sd2
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Sh2
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Se3
        • 2.Qxf3#
      • 1...Kxf4!
  • Keys
    • 1.Seg4!
      • threat
        • 2.Sxf2#
      • 1...Kxf4
        • 2.Rxd4#
      • 1...Rxf4
        • 2.Re5#
      • 1...Rxa8
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATE,XS(F)::B(J)+R(E),DCHECK,XP(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(E),XP(e)
      • Vars
        • K(f);S_FLIGHT,XR(E)::B(J)+S(F)
        • P(g);N_GUARD,XP(D)::R1(E)
      • Refutation
        • R(h);P_SPINR(h),XB(A)
    • Try
      • S(F);
      • Threat
        • B(J)+R(E),DCHECK
      • Vars
        • R(j);N_GUARD,XB(J)::S(F),XR(h)
      • Refutation
        • P(c);
    • Try
      • Q(B);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • R(h);SBLOCK,XB(A)::QAR1(B),XP(e)
        • P(g);XS(F)::B(J)+R(E),DCHECK,XP(e)
        • S(a);::QAB1(B),XP(d)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(d),XB(A)
  • Actual
    • S(F);
    • Threat
      • S(F),XP(b)
    • Vars
      • K(f);P-FLIGHT,XB(A)::R(E),XP(e)
      • R(h);SBLOCK,XB(A)::B(J)+R(E),DCHECK
      • R(j);N_GUARD,XB(J)::S(F),XR(h)
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