MESON Chess Problem Database

Problem Display
PID: 138469 (3nK3/1pN2n2/1B1k1p2/2R2p2/2PP1p2/5P2/3Q4/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize=, Moldavian Ty., 1984

3nK3/1pN2n2/1B1k1p2/2R2p2/2PP1p2/5P2/3Q4/8

#2

8 + 7

6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.dxe5#
    • 1...Sg5
      • 2.Qxf4#
    • 1...Sh6
      • 2.Qxf4#
    • 1...Sh8
      • 2.Qxf4#
    • 1...Sc6
      • 2.Rd5#
    • 1...Se6
      • 2.Sb5#
  • Tries
    • 1.Rc6+?
      • 1...Sxc6
        • 2.c5#
      • 1...bxc6
        • 2.c5#
      • 1...Kxc6!
    • 1.Qc1?
      • 1...Sg5
        • 2.Qxf4#
      • 1...Sh6
        • 2.Qxf4#
      • 1...Sh8
        • 2.Qxf4#
      • 1...Sc6
        • 2.Rd5#
      • 1...Se6
        • 2.Sb5#
      • 1...Se5!
    • 1.Qe1?
      • threat
        • 2.Sb5#
        • 2.Qe7#
      • 1...Sc6
        • 2.Sb5#
        • 2.Rd5#
        • 2.Qe6#
      • 1...Se6
        • 2.Sb5#
        • 2.Qxe6#
      • 1...Se5!
    • 1.Qe2?
      • threat
        • 2.Sb5#
        • 2.Qe7#
      • 1...Sc6
        • 2.Sb5#
        • 2.Rd5#
        • 2.Qe6#
      • 1...Se6
        • 2.Sb5#
        • 2.Qxe6#
      • 1...Se5!
    • 1.Qh2?
      • 1...Sg5
        • 2.Qxf4#
      • 1...Sh6
        • 2.Qxf4#
      • 1...Sh8
        • 2.Qxf4#
      • 1...Sc6
        • 2.Rd5#
      • 1...Se6
        • 2.Sb5#
      • 1...Se5!
  • Keys
    • 1.d5!
      • 1...Ke5
        • 2.d6#
      • 1...Se5
        • 2.Sb5#
      • 1...Sg5
        • 2.Qxf4#
      • 1...Sh6
        • 2.Qxf4#
      • 1...Sh8
        • 2.Qxf4#
      • 1...Sc6
        • 2.dxc6#
      • 1...Se6
        • 2.dxe6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE::QAR(A)+P(D)DCHECK,XS(f)
    • S(f);N_GUARD::QAB(A),XP(a)
    • S(g);SBLOCK::R1(E)
    • S(g);SBLOCK::S(G)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • S(g);SBLOCK,XR(E)::P(C)
        • P(e);SBLOCK,XR(E)::P(C)
      • Refutation
        • K(c);P-FLIGHT,XR(E)
    • Try
      • Q(A);
      • Vars
        • S(f);N_GUARD::QAB(A),XP(a)
        • S(g);SBLOCK::R1(E)
        • S(g);SBLOCK::S(G)
      • Refutation
        • S(f);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • S(f);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • S(f);
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • S(f);N_GUARD::QAB(A),XP(a)
        • S(g);SBLOCK::R1(E)
        • S(g);SBLOCK::S(G)
      • Refutation
        • S(f);N_SPINP(a)
  • Actual
    • P(D);
    • Vars
      • K(c);OGATE,S_FLIGHT::R(E)+P(D)
      • S(f);SBLOCK::S(G)
      • S(f);N_GUARD::QAB(A),XP(a)
      • S(g);OGATE::QAR(A)+P(D),XS(g)
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