MESON Chess Problem Database

Problem Display
PID: 268410 (2b5/Nn1p4/1RB5/pN6/pk1B1Q2/3PK3/2PPn3/8 w - - 0 1)

Markov, Evgeny Viktorovich

Shakhmatnaya kompozitsiya, 1996

2b5/Nn1p4/1RB5/pN6/pk1B1Q2/3PK3/2PPn3/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.dxc3#
    • 1...Sxd4
      • 2.Qxd4#
    • 1...Sc5
      • 2.Bc3#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sd8
      • 2.Qd6#
    • 1...a3
      • 2.Sc3#
      • 2.Sd6#
      • 2.Sc7#
    • 1...dxc6
      • 2.Sxc6#
  • Tries
    • 1.Kxe2?
      • threat
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
      • 1...Sc5
        • 2.Bc3#
      • 1...Sd6
        • 2.Qxd6#
      • 1...d5!
    • 1.Bb2+?
      • 1...Sd4
        • 2.Ba3#
        • 2.Qxd4#
      • 1...Sxf4
        • 2.Ba3#
      • 1...Kc5!
    • 1.Bxb7?
      • threat
        • 2.Qd6#
      • 1...a3
        • 2.Sc3#
      • 1...d6
        • 2.Sc6#
        • 2.Qxd6#
      • 1...Sxf4!
    • 1.Bxd7?
      • threat
        • 2.Sc6#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...a3
        • 2.Sc3#
        • 2.Sd6#
        • 2.Sc7#
      • 1...Sd8
        • 2.Qd6#
        • 2.Qf8#
      • 1...Bxd7!
    • 1.Qd6+?
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Sxd6!
    • 1.Qf8+?
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...d6!
  • Keys
    • 1.Bd5!
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Sxf4
        • 2.c3#
      • 1...a3
        • 2.Sc3#
      • 1...Sg3
        • 2.c3#
      • 1...Sc1
        • 2.c3#
      • 1...Sg1
        • 2.c3#
      • 1...Sc3
        • 2.dxc3#
      • 1...Sc5
        • 2.Bc3#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sd8
        • 2.Qd6#
      • 1...d6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE::P(B),XS(a)
    • S(a);OGATE,P_SPINS(a),XB(E)::QAR2(F),XS(a)
    • S(e);SBLOCK::QAR(F)+B(E),DCHECK
    • S(e);N_GUARD::QAB(F),XS(e)
    • S(e);N_GUARD::QAB(F)
    • P(f);XB(I)::S(J),XP(f)
  • Tries
    • Try
      • K(D);P-FLIGHT,XS(a)
      • Threat
        • DUALS(3)
      • Vars
        • S(e);SBLOCK::QAR(F)+B(E),DCHECK
        • S(e);N_GUARD::QAB(F),XS(e)
      • Refutation
        • P(f);
    • Try
      • B(E);CHECK
      • Vars
        • S(a);XQ(F)::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(I);XS(e)
      • Threat
        • QAB(F)
      • Vars
        • P(b);SBLOCK::R(H)+S(G)
      • Refutation
        • S(a);XQ(F)
    • Try
      • B(I);XP(f)
      • Threat
        • S(J)
      • Vars
        • S(a);OGATE,P_SPINS(a),XB(E)::QAR2(F),XS(a)
      • Refutation
        • B(g);XB(I)
    • Try
      • Q(F);CHECK
      • Refutation
        • S(e);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB(F),XS(e)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • B(I);
    • Vars
      • S(a);OGATE,P_SPINS(a),XB(E)::QAR2(F),XS(a)
      • S(a);N_GUARD,XQ(F)::P(A)
      • P(b);SBLOCK::R(H)+S(G)
      • S(a);N_GUARD::P(A)
      • S(a);OGATE::P(B),XS(a)
      • S(e);SBLOCK::QAR(F)+B(E),DCHECK
      • S(e);N_GUARD::QAB(F),XS(e)
      • S(e);N_GUARD::QAB(F)
      • P(f);N_GUARD::S(J)
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