MESON Chess Problem Database

Problem Display
PID: 112791 (4QR2/7p/7p/2n3N1/6k1/5N2/7K/8 w - - 0 1)

Anstey, Charles Thomas T

St. John Globe, 1906

4QR2/7p/7p/2n3N1/6k1/5N2/7K/8

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se5+?
      • 1...Kh4
        • 2.Sgf3#
      • 1...Kxg5!
    • 1.Sh3?
      • threat
        • 2.Sf2#
        • 2.Rf4#
      • 1...Se4
        • 2.Rf4#
      • 1...Se6
        • 2.Sf2#
      • 1...Sd3!
  • Keys
    • 1.Sf7!
      • threat
        • 2.S7e5#
        • 2.Sxh6#
      • 1...Kxf3
        • 2.Sxh6#
      • 1...Kf4
        • 2.Sxh6#
      • 1...Kf5
        • 2.Sxh6#
      • 1...Kh5
        • 2.S7e5#
      • 1...Sd3
        • 2.Sxh6#
      • 1...Sd7
        • 2.Sxh6#
      • 1...h5
        • 2.S7e5#
        • 2.Sh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::R1(E)
        • S(b);::S(C)
      • Refutation
        • S(b);
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT,XS(B)::R(E)+S(C),XP(c)
      • K(a);P-FLIGHT::R(E)+S(C),XP(c)
      • K(a);S_FLIGHT::R(E)+S(C),DCHECK,XP(c)
      • K(a);S_FLIGHT::QAB(D)+S(C)
      • S(b);::S(C),XP(c)
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