MESON Chess Problem Database

Problem Display
PID: 100866 (8/5n2/6B1/6p1/3B1k1b/7Q/5p2/5K2 w - - 0 1)

Carpenter, George Edward

Good Companions, 1921

8/5n2/6B1/6p1/3B1k1b/7Q/5p2/5K2

#2

4 + 5

6490 yacpdb 2009
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Qf5#
    • 1...Se5
      • 2.Be3#
    • 1...g4
      • 2.Qe3#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Se5
        • 2.Be3#
      • 1...Sh6!
  • Keys
    • 1.Bc5!
      • 1...Ke5
        • 2.Qf5#
      • 1...Bg3
        • 2.Qf5#
      • 1...g4
        • 2.Qe3#
      • 1...Se5
        • 2.Be3#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sh6
        • 2.Bd6#
      • 1...Sd8
        • 2.Bd6#
      • 1...Sh8
        • 2.Bd6#

Anticipated by 214379(1880)

This anticipates 7968(1995)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAR1(B)
    • S(e);SBLOCK::B(C)
    • P(d);SBLOCK::QAB1(B)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(B)
      • Vars
        • P(d);::QAR1(B),XP(d)
        • S(e);SBLOCK::B(C)
      • Refutation
        • S(e);
  • Actual
    • B(C);
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • B(c);SBLOCK::QAR1(B)
      • P(d);SBLOCK::QAB1(B)
      • S(e);SBLOCK::B(C)
      • S(e);N_GUARD::B(C),XS(e)
      • S(e);N_GUARD::B(C)
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