MESON Chess Problem Database

Problem Display
PID: 123052 (4brrb/8/2p4P/7Q/3p1kpP/3P1pN1/5K2/8 w - - 0 1)

Loyd, Sam

Chess Monthly, 1857

4brrb/8/2p4P/7Q/3p1kpP/3P1pN1/5K2/8

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rg5
      • 2.Qxg5#
    • 1...Bg6
      • 2.Qg5#
    • 1...Bf7
      • 2.Qf5#
    • 1...Bf6
      • 2.Qf5#
    • 1...Bg7
      • 2.Qg5#
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qe4#
      • 1...Bg6
        • 2.Qg5#
      • 1...cxd5!
  • Keys
    • 1.Qc5!
      • 1...Rf5
        • 2.Qxf5#
      • 1...Rf6
        • 2.Qxd4#
      • 1...Rf7
        • 2.Sh5#
      • 1...Rg5
        • 2.Qxg5#
      • 1...Rg6
        • 2.Sh5#
      • 1...Rg7
        • 2.Qxd4#
        • 2.Qd6#
      • 1...Bh5
        • 2.Sxh5#
      • 1...Bg6
        • 2.Qg5#
      • 1...Bd7
        • 2.Sh5#
      • 1...Bf7
        • 2.Qf5#
      • 1...Be5
        • 2.Qc1#
      • 1...Bf6
        • 2.Qf5#
      • 1...Bg7
        • 2.Qg5#

This is a version of 22272

There are these versions: 123048

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::QAR1(E),XR(g)
    • R(h);N_GUARD::QAB1(E),XR(h)
    • B(f);S_CUTR(h)::QAB1(E)
    • B(f);S_CUTR(g)::QAR1(E)
    • B(i);S_CUTR(g)::QAR1(E)
    • B(i);S_CUTR(h)::QAB1(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • B(f);S_CUTR(h)::QAB1(E)
      • Refutation
        • P(e);XQ(E)
  • Actual
    • Q(E);
    • Vars
      • R(g);N_GUARD::QAR1(E),XR(g)
      • R(g);S_CUTB(i)::QAR2(E),XP(b)
      • R(g);S_CUTB(f)::S(C)
      • R(h);N_GUARD::QAB1(E),XR(h)
      • R(h);S_CUTB(f)::S(C)
      • B(f);N_GUARD::S(C),XB(f)
      • B(f);S_CUTR(h)::QAB1(E)
      • B(f);N_GUARD::S(C)
      • B(f);S_CUTR(g)::QAR1(E)
      • B(i);SBLOCK::QAB(E)
      • B(i);S_CUTR(g)::QAR1(E)
      • B(i);S_CUTR(h)::QAB1(E)
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