MESON Chess Problem Database

Problem Display
PID: 134425 (1qbRN2b/1p2nn2/4k3/3p4/3P2p1/B7/2K1N2Q/5R2 w - - 0 1)

Taraba, Jozef

1st HM., Pravda, 1992

1qbRN2b/1p2nn2/4k3/3p4/3P2p1/B7/2K1N2Q/5R2

#2

8 + 9

14580 Chess Compositions (Taraba) 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Sc7#
    • 1...Qc7+
      • 2.Sxc7#
    • 1...Qa8
      • 2.Sc7#
    • 1...Bxd4
      • 2.Sxd4#
    • 1...Bf6
      • 2.Rxf6#
    • 1...Bg7
      • 2.Sxg7#
  • Tries
    • 1.Qxb8?
      • threat
        • 2.Sc7#
      • 1...Bxd4
        • 2.Sxd4#
      • 1...Sxd8
        • 2.Qd6#
      • 1...Sf5
        • 2.Sf4#
        • 2.Qxc8#
      • 1...Be5!
    • 1.Qh7?
      • threat
        • 2.Qxf7#
      • 1...Qc7+
        • 2.Sxc7#
      • 1...Sxd8
        • 2.Qxe7#
      • 1...Qf4
        • 2.Sxf4#
      • 1...Bf6
        • 2.Rxf6#
      • 1...Bg7
        • 2.Sxg7#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Se5
        • 2.Sf4#
        • 2.Qxe7#
      • 1...Sg5
        • 2.Qxe7#
      • 1...Sd6
        • 2.Sf4#
      • 1...Sh6
        • 2.Qxe7#
      • 1...Bxd4!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxe7#
      • 1...Qxc7+
        • 2.Sxc7#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Bf6
        • 2.Rxf6#
      • 1...Sf5
        • 2.Sf4#
      • 1...Sc6
        • 2.Qxf7#
      • 1...Sg6
        • 2.Qxf7#
      • 1...Sg8
        • 2.Qxf7#
      • 1...Sd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_GUARD::S(H)
    • Q(g);CHECK,N_GUARD::S(H),XQ(g)
    • B(i);XP(F)::S(C),XB(i)
    • B(i);N_GUARD::R1(A),XB(i)
    • B(i);N_GUARD::S(H),XB(i)
  • Tries
    • Try
      • Q(D);XQ(g)
      • Threat
        • S(H)
      • Vars
        • B(i);XP(F)::S(C),XB(i)
        • S(f);N_GUARD,XR(G)::QAR1(D)
      • Refutation
        • B(i);
    • Try
      • Q(D);
      • Threat
        • QAB1(D),XS(f)
      • Vars
        • Q(g);CHECK,N_GUARD::S(H),XQ(g)
        • S(f);OGATE,XR(G)::QAR1(D),XS(e)
        • Q(g);N_GUARD::S(C),XQ(g)
        • B(i);N_GUARD::R1(A),XB(i)
        • B(i);N_GUARD::S(H),XB(i)
        • S(e);N_GUARD::QAB1(D),XS(e)
        • S(f);OGATE::QAR1(D),XS(e)
        • S(f);S_CUTQ(g)::S(C)
      • Refutation
        • B(i);XP(F)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XS(e)
    • Vars
      • Q(g);CHECK,XQ(D)::S(H),XQ(g)
      • B(h);N_GUARD::QAB1(D),XB(h)
      • B(i);N_GUARD::R1(A),XB(i)
      • S(e);SBLOCK::S(C)
      • S(e);OGATE::QAB1(D),XS(f)
      • S(f);N_GUARD::R1(G),XS(f)
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