MESON Chess Problem Database

Problem Display
PID: 110149 (2B1R3/8/1r2bpp1/3N1R2/1p1Pk3/3p1N1K/2Q5/2B5 w - - 0 1)

Kuzovkov, Aleksandr S

Hlas l'udu, 1983

2B1R3/8/1r2bpp1/3N1R2/1p1Pk3/3p1N1K/2Q5/2B5

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qxd3#
  • Tries
    • 1.Sd2+?
      • 1...Kxd4
        • 2.Bb2#
        • 2.Qc4#
      • 1...Kxf5!
    • 1.Sg5+?
      • 1...Kxd4
        • 2.Bb2#
        • 2.Be3#
      • 1...Kxf5
        • 2.Se7#
        • 2.Qxd3#
        • 2.Qf2#
      • 1...fxg5!
    • 1.Sc3+?
      • 1...Kxf5
        • 2.Sh4#
        • 2.Qxd3#
      • 1...bxc3!
    • 1.Sf4?
      • threat
        • 2.Qxd3#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kxf5
        • 2.Qxd3#
      • 1...dxc2!
    • 1.Rxe6+?
      • 1...Kxf5
        • 2.Sh4#
        • 2.Se7#
        • 2.Re5#
        • 2.Qxd3#
      • 1...Rxe6!
    • 1.Qe2+?
      • 1...Kxf5
        • 2.Sh4#
        • 2.Se7#
        • 2.Qxd3#
      • 1...dxe2!
    • 1.Qf2?
      • threat
        • 2.Sd2#
      • 1...Kxf5
        • 2.Sg5#
      • 1...gxf5
        • 2.Sxf6#
      • 1...d2!
    • 1.Qg2?
      • threat
        • 2.Qg4#
      • 1...Kxf5
        • 2.Sh4#
        • 2.Qg4#
      • 1...gxf5
        • 2.Sxf6#
      • 1...d2!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sxf6#
      • 1...Kxf5
        • 2.Sc3#
      • 1...gxf5
        • 2.Sd2#
      • 1...d2
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XR(G)::QAB(B),XP(a)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • S(C);CHECK
      • Refutation
        • P(f);XS(C)
    • Try
      • S(F);CHECK
      • Refutation
        • P(b);XS(F)
    • Try
      • S(F);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(c);N_SPINB(e),N_SPINP(a),OGATEB,S_FLIGHT,XS(C)::QAB1(B)
        • K(c);S_FLIGHT,XR(G)::QAB(B),XP(a)
      • Refutation
        • P(a);N_SPINP(a),XQ(B)
    • Try
      • R(I);CHECK,N_SPINR(G),XB(e)
      • Refutation
        • R(d);XR(I)
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Refutation
        • P(a);XQ(B)
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • S(C)
      • Vars
        • K(c);S_FLIGHT,XR(G)::QAR(B)+S(C)
        • P(g);SBLOCK,XR(G)::S(F),XP(f)
      • Refutation
        • P(a);
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAR2(B)
      • Vars
        • P(g);SBLOCK,XR(G)::S(F),XP(f)
      • Refutation
        • P(a);
  • Actual
    • Q(B);N_PINP(a)
    • Threat
      • S(F),XP(f)
    • Vars
      • K(c);S_FLIGHT,XR(G)::QAR(B)+S(F)
      • P(g);SBLOCK,XR(G)::S(C)
      • P(a);OGATEB::QAB(B)
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