MESON Chess Problem Database

Problem Display
PID: 163798 (1B4bK/Qn1N4/1Rpp4/p2p4/B1pk1P2/8/2PN1P2/b2R4 w - - 0 1)

Markovtsy, Vassyl Yuriovich

idee & form, 1995

1B4bK/Qn1N4/1Rpp4/p2p4/B1pk1P2/8/2PN1P2/b2R4

#2

11 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Sb1#
    • 1...c3
      • 2.Rb4#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Sde4#
      • 1...Kc3
        • 2.Sb1#
      • 1...Kc5
        • 2.Rbb1#
        • 2.Rb2#
        • 2.Rb3#
        • 2.Rb5#
        • 2.Rxb7#
      • 1...Bc3
        • 2.Sb3#
      • 1...c3
        • 2.Rb4#
      • 1...Sc5!
    • 1.Bxd6?
      • threat
        • 2.Be5#
      • 1...Kc3
        • 2.Sb1#
      • 1...Sxd6!
    • 1.Rxb7+?
      • 1...Kc3
        • 2.Sb1#
        • 2.Qe3#
      • 1...c5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sde4#
      • 1...Kxc5+
        • 2.Rb2#
      • 1...Kc3
        • 2.Sb1#
      • 1...Sxc5
        • 2.Qg7#
      • 1...dxc5
        • 2.Be5#
      • 1...Bc3
        • 2.Sdb3#
      • 1...c3
        • 2.Scb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(C)
    • P(b);SBLOCK::QAB(H)+R(G),DCHECK
  • Tries
    • Try
      • S(I);
      • Threat
        • R(A)+S(C)
      • Vars
        • K(c);S_FLIGHT::S(C)
        • B(a);SBLOCK::R(A)+S(C),DCHECK
        • P(b);SBLOCK::QAB(H)+R(G),DCHECK
      • Refutation
        • S(h);
    • Try
      • B(J);XP(g)
      • Threat
        • B(J)
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • S(h);XB(J)
    • Try
      • R(G);CHECK,XS(h)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • S(I);
    • Threat
      • R(A)+S(C)
    • Vars
      • K(c);CHECK,OGATEB,S_FLIGHT,XS(I)::QAB(H)+R(G)
      • K(c);S_FLIGHT::S(C)
      • S(h);OGATE,SBLOCK,XS(I)::QAB(H)
      • P(g);OGATE,SBLOCK,XS(I)::B(J)
      • B(a);SBLOCK::R(A)+S(C),DCHECK
      • P(b);N_GUARD,SBLOCK::S(I)
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