MESON Chess Problem Database

Problem Display
PID: 258092 (3R4/4KQ1b/3p4/2PPB3/2n1k3/R2ppN2/B1Pr1pP1/2N5 w - - 0 1)

Mosiashvili, Givi

1/2 Prize, Problemist Ukraini, 2015

3R4/4KQ1b/3p4/2PPB3/2n1k3/R2ppN2/B1Pr1pP1/2N5

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.cxd3#
    • 1...Sb2
      • 2.Qf4#
      • 2.Qxh7#
    • 1...Sxa3
      • 2.Qf4#
      • 2.Qxh7#
    • 1...Sa5
      • 2.Qf4#
      • 2.Qxh7#
    • 1...Sb6
      • 2.Qf4#
      • 2.Qxh7#
    • 1...dxc5
      • 2.Qf4#
      • 2.Qxh7#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
        • 2.Sg3#
      • 1...Rxc2
        • 2.Sg3#
      • 1...Rxe2
        • 2.cxd3#
      • 1...dxc2
        • 2.Sg3#
      • 1...f1S
        • 2.Sc3#
      • 1...dxe2!
    • 1.Rxd3?
      • threat
        • 2.Qf4#
        • 2.Qxh7#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Sxe5
        • 2.Sg5#
      • 1...dxe5
        • 2.Sg5#
      • 1...Bg6
        • 2.Qxg6#
        • 2.Qf4#
      • 1...Bg8
        • 2.Qg6#
        • 2.Qf4#
      • 1...Bf5!
    • 1.Qe6?
      • threat
        • 2.Sg5#
      • 1...Sxe5
        • 2.Ra4#
      • 1...dxe5
        • 2.Qg4#
      • 1...e2!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sg5#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Sxe5
        • 2.Qf4#
      • 1...dxe5
        • 2.Qxh7#
      • 1...e2
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD::P(C),XP(c)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(C)::S(A)
        • R(a);N_GUARD,XS(A)::P(C),XP(c)
        • P(c);XP(C)::S(A)
        • P(b);::S(A)
      • Refutation
        • P(c);XS(A)
    • Try
      • R(E);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);OGATE,XR(E)::P(C),XR(a)
        • S(e);SBLOCK,XB(I)::S(F)
        • P(g);SBLOCK,XB(I)::S(F)
      • Refutation
        • B(h);
    • Try
      • Q(K);
      • Threat
        • S(F)
      • Vars
        • S(e);OGATEB,P_SPINS(e),XB(I)::R(E)
        • P(g);P_SPINP(g),XB(I)::QAR2(K)
      • Refutation
        • P(d);
  • Actual
    • S(A);XP(c)
    • Threat
      • S(F)
    • Vars
      • R(a);OGATE,XS(A)::P(C),XR(a)
      • S(e);XB(I)::QAR1(K)
      • P(g);XB(I)::QAB(K),XB(h)
      • P(d);N_GUARD,S_CUTR(a)::S(A),XP(b)
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