MESON Chess Problem Database

Problem Display
PID: 208212 (N3Q3/B1p5/Rn1kn3/P3p3/1P2B3/8/1K5b/8 w - - 0 1)

Fomichev, Evgeny Vasilevich

Sachova skladba, 1993

N3Q3/B1p5/Rn1kn3/P3p3/1P2B3/8/1K5b/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Rxb6#
  • Tries
    • 1.Sxb6?
      • threat
        • 2.Sc4#
        • 2.Sc8#
        • 2.Qd7#
      • 1...c5
        • 2.Sd5#
        • 2.Sa8#
        • 2.Qd7#
      • 1...c6
        • 2.Qd7#
      • 1...Sc5
        • 2.Sc4#
        • 2.Sc8#
      • 1...Sf8
        • 2.Sc4#
        • 2.Sc8#
      • 1...cxb6!
    • 1.Bxb6?
      • threat
        • 2.Bc5#
        • 2.Bxc7#
      • 1...cxb6
        • 2.Rxb6#
      • 1...Sc5
        • 2.Bxc5#
        • 2.Bxc7#
        • 2.bxc5#
      • 1...c5
        • 2.Bxc5#
        • 2.Ba7#
        • 2.Bc7#
        • 2.Bd8#
      • 1...c6!
    • 1.Bb8?
      • threat
        • 2.Rxb6#
      • 1...Sd4
        • 2.Bxc7#
      • 1...Sd8
        • 2.Bxc7#
      • 1...Bg1!
    • 1.Rxb6+?
      • 1...c6
        • 2.Rxc6#
      • 1...cxb6!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Sb5#
      • 1...Kxc7
        • 2.Bb8#
      • 1...Sxc7
        • 2.Rxb6#
      • 1...Sd4
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD::R(E),XS(c)
  • Tries
    • Try
      • S(G);XS(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(f);::QAR1(H)
      • Refutation
        • P(f);P_SPINP(f),XS(G)
    • Try
      • B(F);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,P_SPINP(f),XB(F)::R(E),XP(f)
      • Refutation
        • P(f);
    • Try
      • B(F);P_PINP(f)
      • Threat
        • R(E),XS(c)
      • Vars
        • S(e);N_GUARD::B(F),XP(f)
      • Refutation
        • B(a);
    • Try
      • R(E);CHECK,XS(c)
      • Vars
        • P(f);P_SPINP(f)::R1(E),XP(f)
      • Refutation
        • P(f);XR(E)
  • Actual
    • S(G);XP(f)
    • Threat
      • S(G)
    • Vars
      • K(d);N_SPINS(c),OGATEB,S_FLIGHT,XS(G)::B(F)
      • S(e);SBLOCK,XS(G)::R(E),XS(c)
      • S(e);N_GUARD::QAR2(H)
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