MESON Chess Problem Database

Problem Display
PID: 244094 (3N3n/B2p1NQr/p4b1R/3kpp2/PR6/1P3P2/1P6/5K2 w - - 0 1)

Grinchenko, Dmitry

Probleemblad, 1981

3N3n/B2p1NQr/p4b1R/3kpp2/PR6/1P3P2/1P6/5K2

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Rd6#
      • 2.Qxe5#
    • 1...Bg5
      • 2.Rd6#
      • 2.Qxe5#
    • 1...Be7
      • 2.Qxe5#
    • 1...Bxg7
      • 2.Rd6#
    • 1...Bxd8
      • 2.Rd6#
      • 2.Qxe5#
    • 1...a5
      • 2.Rb5#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Rd6#
      • 1...Kd4
        • 2.Rd6#
      • 1...Kc5
        • 2.Rb5#
      • 1...Be7
        • 2.Qxe5#
      • 1...d6
        • 2.Rxd6#
      • 1...Sxf7!
    • 1.Qxf6?
      • threat
        • 2.Qxe5#
        • 2.Qd6#
      • 1...Rxh6
        • 2.Qxe5#
      • 1...Rxf7
        • 2.Qd6#
      • 1...Sg6
        • 2.Qd6#
      • 1...e4
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qxf5#
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
        • 2.Qe6#
      • 1...Sxf7!
    • 1.Qf8?
      • threat
        • 2.Qc5#
        • 2.Qd6#
      • 1...Rxf7
        • 2.Qc5#
      • 1...Sxf7
        • 2.Qc5#
      • 1...d6
        • 2.Qxd6#
      • 1...Be7!
    • 1.Qg2?
      • threat
        • 2.Qd2#
      • 1...Bg5
        • 2.Rd6#
      • 1...e4!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qd2#
      • 1...Bxg5
        • 2.Rd6#
      • 1...e4
        • 2.fxe4#
      • 1...f4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(e);OGATE::QAR1(J),XP(b)
    • B(e);OGATE,XQ(J)::R1(G)
    • P(d);N_GUARD::R(F)
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(F)
      • Vars
        • K(a);P-FLIGHT::B(H)+R(F),DCHECK
        • B(e);OGATE::QAR1(J),XP(b)
        • P(f);::R1(F),XP(f)
      • Refutation
        • S(h);XS(I)
    • Try
      • Q(J);XB(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XR(G)::QAR1(J),XP(b)
        • R(g);XS(I)::QAR1(J)
        • S(h);::QAR1(J)
      • Refutation
        • S(h);XS(I)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XS(I)::QAR1(J)
        • S(h);XS(I)::QAR1(J)
        • P(f);::QAR1(J),XP(f)
      • Refutation
        • B(e);
    • Try
      • Q(J);
      • Threat
        • QAR(J)
      • Vars
        • B(e);OGATE::R1(G)
      • Refutation
        • P(b);
  • Actual
    • Q(J);
    • Threat
      • QAR(J)
    • Vars
      • B(e);OGATE,XQ(J)::R1(G)
      • P(b);OGATE,P_SPINP(c)::P(D),XP(b)
      • P(c);P_SPINP(b)::R1(F)
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