MESON Chess Problem Database

Problem Display
PID: 229312 (nQ2K3/2pp4/1p5R/1pk1NNRp/8/bp1p4/1r1B2B1/8 w - - 0 1)

Solokhin, Sergey

The Macedonian Problemist, 2020

nQ2K3/2pp4/1p5R/1pk1NNRp/8/bp1p4/1r1B2B1/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Be3#
    • 1...c6
      • 2.Qd6#
    • 1...d5
      • 2.Rc6#
  • Tries
    • 1.Kxd7?
      • threat
        • 2.Rc6#
        • 2.Qf8#
      • 1...Rxd2
        • 2.Qf8#
      • 1...c6
        • 2.Rxc6#
        • 2.Qd6#
        • 2.Qf8#
      • 1...b4!
    • 1.Sc6?
      • threat
        • 2.Sd6#
      • 1...Kc4
        • 2.Se3#
      • 1...dxc6
        • 2.Rxc6#
      • 1...d6
        • 2.Sxd6#
      • 1...d5!
    • 1.Rxb6?
      • threat
        • 2.Rxb5#
      • 1...Sxb6
        • 2.Qxc7#
      • 1...cxb6
        • 2.Qd6#
      • 1...b4
        • 2.Be3#
        • 2.Rb5#
      • 1...c6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Sf3#
      • 1...cxd6
        • 2.Qxd6#
      • 1...c6
        • 2.Sf3#
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);SBLOCK::B(A)
    • P(i);OGATE::QAB1(G)
    • P(j);N_GUARD::R1(F)
  • Tries
    • Try
      • K(H);S_FLIGHT,XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(A)::QAB(G)
      • Refutation
        • P(e);
    • Try
      • S(C);
      • Threat
        • R(E)+S(D)
      • Vars
        • K(f);P-FLIGHT::S(D)
        • P(j);OGATE,XS(C)::R1(F),XP(j)
        • P(j);::R(E)+S(D),XP(j)
      • Refutation
        • P(j);
    • Try
      • R(F);XP(h)
      • Threat
        • R1(F),XP(e)
      • Vars
        • S(k);N_GUARD,XR(F)::QAR2(G),XP(i)
        • P(i);OGATE,XR(F)::QAB1(G)
      • Refutation
        • P(i);
  • Actual
    • S(D);
    • Threat
      • R(E)+S(C)
    • Vars
      • K(f);S_FLIGHT::S(C)
      • P(i);OGATE,XS(D)::QAB1(G),XP(i)
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