MESON Chess Problem Database

Problem Display
PID: 67314 (4R3/p5B1/K1p2N2/5pRp/2kPp3/Q7/1P2n3/3bN3 w - - 0 1)

Kuzovkov, Aleksandr S

1st HM., Boyer MT, 1988

4R3/p5B1/K1p2N2/5pRp/2kPp3/Q7/1P2n3/3bN3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Qc5#
    • 1...Ba4
      • 2.Qxa4#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sg1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sg3
      • 2.Qc3#
    • 1...Sxd4
      • 2.Qc3#
    • 1...Sf4
      • 2.Qc3#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Se3#
      • 1...Kd5
        • 2.Se3#
        • 2.Qc5#
      • 1...fxg4
        • 2.Rc5#
      • 1...e3
        • 2.Sxe3#
      • 1...f4
        • 2.Rc5#
      • 1...hxg4!
    • 1.Bf8?
      • threat
        • 2.Qb4#
      • 1...Kxd4
        • 2.Qc5#
      • 1...c5!
    • 1.Rg3?
      • threat
        • 2.Qc5#
      • 1...Kxd4
        • 2.Qb4#
      • 1...Sxg3
        • 2.Qc3#
      • 1...Sxd4
        • 2.Rc3#
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...c5
        • 2.Qxc5#
      • 1...e3!
    • 1.Rb8?
      • threat
        • 2.Rb4#
        • 2.Qb4#
        • 2.Qc5#
      • 1...Sxd4
        • 2.Qb4#
        • 2.Qc3#
      • 1...c5
        • 2.Qxc5#
      • 1...Kxd4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Se3#
      • 1...Kxd5
        • 2.Qc5#
      • 1...cxd5
        • 2.Rc8#
      • 1...e3
        • 2.Sxe3#
      • 1...f4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • B(a);SBLOCK::QAR1(C)
    • B(a);N_GUARD::QAR2(C),XB(a)
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD,XP(D)::QAR1(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • P(e);OGATE,XS(G)::R1(E)
        • P(d);::S(G),XP(d)
        • P(e);OGATE::R1(E)
      • Refutation
        • P(f);XS(G)
    • Try
      • B(H);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);P-FLIGHT,XP(D)::QAB1(C)
      • Refutation
        • P(g);
    • Try
      • R(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);P-FLIGHT,XP(D)::QAR2(C)
        • S(b);N_GUARD,XR(E)::QAR1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • P(g);::QAR1(C),XP(g)
      • Refutation
        • P(d);
    • Try
      • R(I);
      • Threat
        • DUALS(3)
      • Vars
        • P(g);::QAR1(C),XP(g)
      • Refutation
        • K(c);P-FLIGHT,XP(D)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(c);P_SPINP(e),S_FLIGHT,XS(G)::QAR1(C)
      • P(g);OGATEB,SBLOCK,XS(G)::R(I)
      • P(d);::S(G),XP(d)
      • P(e);::QAR1(C)
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