MESON Chess Problem Database

Problem Display
PID: 78973 (b7/q7/4N3/2pn3r/3N1Q1p/1P1k1P1K/R1RprB2/2b5 w - - 0 1)

Paslack, Rainer

1st HM., Probleemblad, 2007

b7/q7/4N3/2pn3r/3N1Q1p/1P1k1P1K/R1RprB2/2b5

#2

9 + 10

102 Probleemblad 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Sxc5#
    • 1...Qxa2
      • 2.Sxc5#
    • 1...Qa4
      • 2.Sxc5#
    • 1...Qa6
      • 2.Sxc5#
    • 1...Qb7
      • 2.Sxc5#
    • 1...Qf7
      • 2.Sxc5#
    • 1...Qg7
      • 2.Sxc5#
    • 1...Qh7
      • 2.Sxc5#
    • 1...Rxf2
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Sxf4+
      • 2.Sxf4#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qc4#
      • 1...Sxf4+
        • 2.Sxf4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Qa4
        • 2.Sxc5#
      • 1...Qa6
        • 2.Sxc5#
      • 1...Sb6
        • 2.Sxc5#
      • 1...c4
        • 2.Qxc4#
      • 1...Se3!
    • 1.Sc6?
      • threat
        • 2.Qc4#
      • 1...Sxf4+
        • 2.Sxf4#
      • 1...Rxf2
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Qa4
        • 2.Sxc5#
      • 1...Qa6
        • 2.Sxc5#
      • 1...Se3
        • 2.Qe4#
      • 1...c4
        • 2.Qxc4#
      • 1...Sb6!
    • 1.Qf5+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Rxf5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qc4#
      • 1...Sxf4+
        • 2.Sxf4#
      • 1...Rxf2
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Qa4
        • 2.Sxc5#
      • 1...Se3
        • 2.Rc3#
      • 1...Sb6
        • 2.Rc3#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(i);N_GUARD::S(I),XP(f)
    • Q(i);N_GUARD,XR(A)::S(I),XP(f)
    • R(c);N_GUARD,XB(C)::QAB1(H)
    • R(c);N_GUARD::QAB1(H),XR(c)
    • S(g);CHECK,XQ(H)::S(I),XS(g)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(H)
      • Vars
        • S(g);CHECK,XQ(H)::S(I),XS(g)
        • R(c);N_GUARD::QAB1(H),XR(c)
        • Q(i);N_GUARD::S(I),XP(f)
        • S(g);S_CUTQ(i)::S(I),XP(f)
        • P(f);::QAB1(H),XP(f)
      • Refutation
        • S(g);
    • Try
      • S(G);
      • Threat
        • QAB1(H)
      • Vars
        • S(g);CHECK,XQ(H)::S(I),XS(g)
        • R(c);N_GUARD,XB(C)::QAB1(H)
        • R(c);N_GUARD::QAB1(H),XR(c)
        • Q(i);N_GUARD::S(I),XP(f)
        • S(g);S_CUTR(c)::QAB1(H)
        • P(f);::QAB1(H),XP(f)
      • Refutation
        • S(g);
    • Try
      • Q(H);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(H),XR(c)
      • Refutation
        • R(h);XQ(H)
  • Actual
    • S(G);
    • Threat
      • QAB1(H)
    • Vars
      • S(g);CHECK,XQ(H)::S(I),XS(g)
      • R(c);N_GUARD,XB(C)::QAB1(H)
      • R(c);N_GUARD::QAB1(H),XR(c)
      • Q(i);N_GUARD::S(I),XP(f)
      • S(g);N_GUARD::R1(B)
      • P(f);::QAB1(H),XP(f)
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