MESON Chess Problem Database

Problem Display
PID: 268283 (5K2/1N2p2b/1pp1p3/bp6/n2kP1p1/n5Q1/BR1P1P2/2N1R3 w - - 0 1)

Shanshin, Valery Yurevich

Probleemblad, 1986

5K2/1N2p2b/1pp1p3/bp6/n2kP1p1/n5Q1/BR1P1P2/2N1R3

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Rxd2#
    • 1...Bxe4
      • 2.Se2#
    • 1...Sc4
      • 2.Sb3#
    • 1...e5
      • 2.Qd3#
      • 2.Qe3#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sb3#
      • 1...Kc5
        • 2.Qe5#
      • 1...exd6
        • 2.Qxd6#
      • 1...Sc5
        • 2.Se2#
      • 1...Bxe4!
    • 1.Rb4+?
      • 1...Sc4
        • 2.Sb3#
      • 1...Bxb4!
    • 1.f4?
      • threat
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Bxd2
        • 2.Rxd2#
        • 2.Qd3#
      • 1...Bxe4
        • 2.Se2#
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qe3#
      • 1...Sxb2
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qe3#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sc4
        • 2.Sb3#
        • 2.Qd3#
      • 1...Sc5
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qe3#
      • 1...gxf4 ep!
  • Keys
    • 1.d3!
      • threat
        • 2.Se2#
      • 1...Kc3
        • 2.Qe5#
      • 1...Sc3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(e);OGATE,XP(E)::R(D),XB(e)
    • B(k);SBLOCK,XP(H)::S(A)
    • S(a);SBLOCK::S(A)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(A)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAR2(G)
        • P(j);OGATE,XS(I)::QAR2(G),XP(j)
        • S(b);SBLOCK::S(A)
      • Refutation
        • B(k);XP(H)
    • Try
      • R(D);CHECK
      • Vars
        • S(a);P_SPINS(a)::S(A)
      • Refutation
        • B(e);XR(D)
    • Try
      • P(F);
      • Threat
        • DUALS(4)
      • Vars
        • S(a);::QAR1(G)
      • Refutation
        • P(d);EP,XP(F)
  • Actual
    • P(E);
    • Threat
      • S(A)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::QAB(G)
      • S(b);SBLOCK::S(A)
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