MESON Chess Problem Database

Problem Display
PID: 58203 (8/3P4/3nBpP1/4k2K/2r2N1Q/2n1r3/7B/3RN3 w - - 0 1)

Ulanov, Lev

Scacco!, 1997

8/3P4/3nBpP1/4k2K/2r2N1Q/2n1r3/7B/3RN3

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Se2#
      • 2.Sfg2#
      • 2.Sfd3#
      • 2.Sh3#
      • 2.Sd5#
    • 1...Ree4
      • 2.Sf3#
    • 1...Sce4
      • 2.Rd5#
  • Tries
    • 1.Rd5+?
      • 1...Ke4
        • 2.Se2#
        • 2.Sfg2#
        • 2.Sfd3#
        • 2.Sh3#
      • 1...Sxd5!
  • Keys
    • 1.d8S!
      • threat
        • 2.Sfd3#
      • 1...Ke4
        • 2.Se2#
        • 2.Sfg2#
        • 2.Sfd3#
        • 2.Sh3#
        • 2.Sd5#
      • 1...Rxf4
        • 2.Qxf4#
      • 1...Rd3
        • 2.Sfxd3#
      • 1...Ree4
        • 2.Sf3#
      • 1...Rce4
        • 2.Sc6#
      • 1...Sce4
        • 2.Rd5#
      • 1...Sde4
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,SBLOCK::S(B)
    • S(a);N_GUARD,SBLOCK::R1(A)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • S(a);XR(A)
  • Actual
    • P(I);
    • Threat
      • B(C)+S(D),DCHECK
    • Vars
      • R(c);OGATE,P_SPINR(c),XS(D)::QAB1(E),XR(c)
      • R(b);::B(C)+S(D),DCHECK,XR(b)
      • R(b);N_GUARD,SBLOCK::S(B)
      • R(c);N_GUARD,SBLOCK::S(I)
      • S(a);N_GUARD,SBLOCK::R1(A)
      • S(e);N_GUARD,SBLOCK::S(I)
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Developed and maintained by Brian Stephenson.
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