MESON Chess Problem Database

Problem Display
PID: 11456 (1nN4K/2p2B1b/5Q2/1pkP1n1R/1p6/r1bP1N2/3P4/2R5 w - - 0 1)

Marshall, Burney Means

2nd HM., American Chess Bulletin, 1939

1nN4K/2p2B1b/5Q2/1pkP1n1R/1p6/r1bP1N2/3P4/2R5

#2

10 + 9

5088 How to Solve Chess Problems 1945

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
      • 2.Qe7#
    • 1...Sh4
      • 2.Qd4#
    • 1...Sd6
      • 2.Qd4#
    • 1...Sh6
      • 2.Qd4#
    • 1...Se7
      • 2.Qd4#
    • 1...Sg7
      • 2.Qd4#
      • 2.Qe7#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.d4+?
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Kc4!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Se4#
      • 1...b3
        • 2.Qxc3#
      • 1...Se3
        • 2.Se6#
      • 1...Sg3
        • 2.Se6#
      • 1...Sd4
        • 2.Qe7#
      • 1...Sh4
        • 2.Se6#
      • 1...Sd6
        • 2.Se6#
      • 1...Sh6
        • 2.Se6#
      • 1...Se7
        • 2.Se6#
      • 1...Sg7
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::QAB1(G)
    • P(c);N_GUARD,S_CUTR(a)::QAR2(G),XB(b)
  • Tries
    • Try
      • P(C);CHECK,N_SPINQ(G)
      • Vars
        • S(f);OGATE,XP(C)::QAB1(G),XS(f)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • P(c);N_GUARD,S_CUTR(a)::QAR2(G),XB(b)
      • S(f);::S(D)
      • S(f);N_PINQ(G),SBLOCK::QAB(G)
      • S(f);N_PINQ(G)::QAB(G)
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