MESON Chess Problem Database

Problem Display
PID: 164772 (8/4PR1p/4PKp1/q2pp1Q1/3p4/4rkN1/R1b2p2/2B2B2 w - - 0 1)

Rossomakho, Yakov V

The Problemist, 2016

8/4PR1p/4PKp1/q2pp1Q1/3p4/4rkN1/R1b2p2/2B2B2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Kxe5#
      • 2.Kg7#
    • 1...Bd1
      • 2.Kg7#
    • 1...Bb3
      • 2.Kg7#
    • 1...Ba4
      • 2.Kg7#
    • 1...d3
      • 2.Kg7#
    • 1...e4
      • 2.Ke5#
      • 2.Kg7#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Qg2#
      • 1...Ke4
        • 2.Qg4#
      • 1...gxh5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Kxe5#
      • 1...Kxe4
        • 2.Qg4#
      • 1...Rxe4
        • 2.Qg2#
      • 1...Bxe4
        • 2.Bg2#
      • 1...dxe4
        • 2.Kg7#
      • 1...Qc7
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::R(I)+K(G)
    • P(e);S_CUTB(a)::R(I)+K(G)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(E)
      • Vars
        • K(d);S_FLIGHT::QAR2(E)
      • Refutation
        • P(i);XS(D)
  • Actual
    • S(D);
    • Threat
      • R(I)+K(G),XP(h)
    • Vars
      • K(d);S_FLIGHT,XS(D)::QAR2(E)
      • R(c);SBLOCK,XS(D)::QAB1(E)
      • B(a);SBLOCK,XS(D)::B(B)
      • P(g);SBLOCK,XS(D)::R(I)+K(G)
      • Q(f);N_GUARD::S(D)
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