MESON Chess Problem Database

Problem Display
PID: 22272 (2brrb2/8/p7/7Q/1p1kpPp1/1P1pN1P1/3K4/8 w - - 0 1)

Loyd, Sam

Boston Gazette, 1859

2brrb2/8/p7/7Q/1p1kpPp1/1P1pN1P1/3K4/8

#2

6 + 10

461 Schach-Express 1949
3147 Chess Problems: Introduction to an Art 1963
6479 Problemschach (Sidler) 1968
3979 Systematic Terminology 1984
45 Schach 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Be6
      • 2.Qe5#
    • 1...Bd7
      • 2.Qd5#
    • 1...Bd6
      • 2.Qd5#
    • 1...Be7
      • 2.Qe5#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qc4#
      • 1...Be6
        • 2.Qe5#
      • 1...axb5!
  • Keys
    • 1.Qa5!
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rd6
        • 2.Qxb4#
      • 1...Rd7
        • 2.Sf5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Re6
        • 2.Sf5#
      • 1...Re7
        • 2.Qxb4#
        • 2.Qb6#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Be6
        • 2.Qe5#
      • 1...Bb7
        • 2.Sf5#
      • 1...Bd7
        • 2.Qd5#
      • 1...Bc5
        • 2.Qa1#
      • 1...Bd6
        • 2.Qd5#
      • 1...Bh6
        • 2.Qxb4#
        • 2.Qb6#
      • 1...Be7
        • 2.Qe5#
      • 1...Bg7
        • 2.Qxb4#
        • 2.Qb6#

This is a version of 123048

There are these versions: 1963, 123052

FEATURES

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