MESON Chess Problem Database

Problem Display
PID: 91409 (3R3n/3br3/2Q1pq2/1p2Pp2/3kN2B/8/2K2R2/b2N2n1 w - - 0 1)

Kuzovkov, Aleksandr S

3rd HM., Probleemblad, 1987

3R3n/3br3/2Q1pq2/1p2Pp2/3kN2B/8/2K2R2/b2N2n1

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Bxf6#
    • 1...Qxe5
      • 2.Rd2#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qd6#
      • 1...Kxe5
        • 2.Qc5#
      • 1...Qxe5
        • 2.Sb3#
      • 1...Sf7!
    • 1.Re2?
      • threat
        • 2.Qc5#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Qxe5
        • 2.Bf2#
        • 2.Rd2#
      • 1...fxe4
        • 2.Rxe4#
      • 1...Sxe2!
    • 1.Rxd7+?
      • 1...Kxe5
        • 2.Bxf6#
      • 1...Rxd7!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Se3#
        • 2.Sd2#
        • 2.Qc5#
      • 1...Kxe4!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Qc5#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Qxe5
        • 2.Bf2#
      • 1...fxe4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(h),OGATEB,S_FLIGHT,XP(F)::B(E),XQ(g)
    • Q(g);SBLOCK,XP(F)::R(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR2(G)
      • Vars
        • K(c);N_SPINB(h),S_FLIGHT,XP(F)::QAR2(G)
        • Q(g);SBLOCK,XP(F)::S(D)
      • Refutation
        • S(j);
    • Try
      • R(C);
      • Threat
        • QAB1(G)
      • Vars
        • K(c);N_SPINB(h),S_FLIGHT,XP(F)::QAB1(G)
        • P(e);OGATE,XS(D)::R1(C),XP(e)
      • Refutation
        • S(b);XR(C)
    • Try
      • R(H);CHECK,XB(h)
      • Vars
        • K(c);S_FLIGHT,XP(F)::B(E),XQ(g)
      • Refutation
        • R(i);XR(H)
    • Try
      • Q(G);CHECK,N_PINB(h)
      • Refutation
        • K(c);P-FLIGHT,XS(D)
  • Actual
    • R(C);
    • Threat
      • QAB1(G)
    • Vars
      • K(c);N_SPINB(h),S_FLIGHT,XP(F)::QAB1(G)
      • Q(g);SBLOCK,XP(F)::B(E)
      • P(e);OGATE,P_SPINP(e),XS(D)::R1(C),XP(e)
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