MESON Chess Problem Database

Problem Display
PID: 207512 (7Q/3N4/3pp3/6P1/3pkNKb/R1n5/8/5B2 w - - 0 1)

Martindale, Frank W

Chess Problems - Martindale, FW, 1872

7Q/3N4/3pp3/6P1/3pkNKb/R1n5/8/5B2

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Bg2#
      • 2.Qh7#
    • 1...Sd1
      • 2.Bg2#
      • 2.Qh7#
    • 1...Sa2
      • 2.Bg2#
      • 2.Qh7#
    • 1...Se2
      • 2.Bg2#
      • 2.Qh7#
    • 1...Sa4
      • 2.Bg2#
      • 2.Qh7#
    • 1...Sb5
      • 2.Bg2#
      • 2.Qh7#
    • 1...Sd5
      • 2.Bg2#
      • 2.Qh7#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Sf6+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sg6#
      • 1...Ke3!
  • Keys
    • 1.Sd5!
      • 1...Kxd5
        • 2.Qa8#
      • 1...Bxg5
        • 2.Qh1#
      • 1...Sxd5
        • 2.Bg2#
        • 2.Qh7#
      • 1...exd5
        • 2.Qe8#
      • 1...Be1
        • 2.Qh1#
      • 1...Bf2
        • 2.Qh1#
      • 1...Bg3
        • 2.Qh1#
      • 1...Sb1
        • 2.S5f6#
        • 2.Bg2#
      • 1...Sd1
        • 2.S5f6#
        • 2.Bg2#
      • 1...Sa2
        • 2.S5f6#
        • 2.Bg2#
      • 1...Se2
        • 2.S5f6#
        • 2.Bg2#
      • 1...Sa4
        • 2.S5f6#
        • 2.Bg2#
      • 1...Sb5
        • 2.S5f6#
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...e5
        • 2.S7f6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::QAR1(G)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(a)
  • Actual
    • S(C);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(C)::QAB(G)
      • B(d);OGATE,XP(E)::QAB(G)
      • P(f);OGATEB,SBLOCK,XS(C)::QAR(G)
      • B(d);OGATE::QAB(G)
      • P(b);SBLOCK::B(A)
      • P(f);SBLOCK::S(F)
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