MESON Chess Problem Database

Problem Display
PID: 157779 (4Q3/2B5/1qNP3n/2Nk1pb1/R1R2pp1/2p5/1PP5/1n1K1B2 w - - 0 1)

Mazul, Waldemar

Dziennik Baltycki, 1986

4Q3/2B5/1qNP3n/2Nk1pb1/R1R2pp1/2p5/1PP5/1n1K1B2

#2

11 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Sb4#
    • 1...Qb4
      • 2.Sxb4#
    • 1...Qa6
      • 2.Sb4#
    • 1...Qxc6
      • 2.Qe6#
  • Tries
    • 1.Se4?
      • threat
        • 2.Qe5#
      • 1...Qd4+
        • 2.Rxd4#
      • 1...Qxc6
        • 2.Rd4#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Be7!
    • 1.Bxb6?
      • threat
        • 2.Rd4#
      • 1...Kxd6
        • 2.Rd4#
        • 2.Qd7#
        • 2.Qe6#
      • 1...Bf6!
    • 1.b4?
      • threat
        • 2.Rd4#
      • 1...Qxc5
        • 2.Rxc5#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...Qxc6
        • 2.Qe6#
      • 1...Bf6!
    • 1.d7?
      • threat
        • 2.Qe6#
      • 1...Kxc6
        • 2.d8Q#
      • 1...Qxc6
        • 2.Qe5#
      • 1...Be7
        • 2.Sxe7#
      • 1...Qxc5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qe5#
      • 1...Qb4
        • 2.Sdxb4#
      • 1...Be7
        • 2.Sxf4#
      • 1...Qe3
        • 2.Sdb4#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Bf6
        • 2.Sxf4#
      • 1...Sf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD::S(H)
    • Q(h);N_GUARD::S(H),XQ(h)
    • Q(h);SBLOCK,XS(H)::QAB1(K)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(K)
      • Vars
        • Q(h);CHECK,N_GUARD::R1(F),XQ(h)
        • Q(h);N_GUARD,XS(H)::R1(F)
        • Q(h);N_GUARD::R1(F),XQ(h)
        • B(g);N_GUARD::S(G),XB(g)
        • S(i);N_GUARD::QAB(K),XS(i)
      • Refutation
        • B(g);
    • Try
      • B(J);XQ(h)
      • Threat
        • R1(F)
      • Refutation
        • B(g);
    • Try
      • P(C);
      • Threat
        • R1(F)
      • Vars
        • Q(h);OGATE,XS(G)::R1(F),XQ(h)
        • Q(h);XP(C)::S(H),XQ(h)
        • Q(h);SBLOCK,XS(H)::QAB1(K)
      • Refutation
        • B(g);
    • Try
      • P(I);
      • Threat
        • QAB1(K)
      • Vars
        • K(e);S_FLIGHT,XS(H)::P=Q
        • Q(h);SBLOCK,XS(H)::QAR1(K)
        • B(g);N_GUARD::S(H),XB(g)
      • Refutation
        • Q(h);XS(G)
  • Actual
    • S(G);
    • Threat
      • QAR1(K)
    • Vars
      • Q(h);N_GUARD::S(G),XQ(h)
      • B(g);N_GUARD::S(G),XP(c)
      • Q(h);N_GUARD::S(G)
      • Q(h);N_GUARD,P_PINS(G)::R1(F),XQ(h)
      • Q(h);N_GUARD::R1(F),XQ(h)
      • S(i);N_GUARD::QAB(K),XS(i)
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