MESON Chess Problem Database

Problem Display
PID: 17299 (3Q1b2/7b/3npN2/2p5/2P2P1R/2P1k3/1N6/3BK3 w - - 0 1)

Buchwald, Julius

1st Prize, American Chess Bulletin, 1946

3Q1b2/7b/3npN2/2p5/2P2P1R/2P1k3/1N6/3BK3

#2

9 + 6

14773 The Best American Chess Problems of 1946 1948
5064 100 Years of the American Two-move Chess Problem 1962
5063 Spectacular Chess Problems 1965
5759 Selected Compositions of Julius Buchwald 2005
145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc4
      • 2.Sxc4#
    • 1...Se4
      • 2.Qd3#
    • 1...Sb5
      • 2.Qd2#
    • 1...Sf5
      • 2.Qd2#
      • 2.Qd3#
    • 1...Sb7
      • 2.Qd2#
    • 1...Sf7
      • 2.Qd2#
    • 1...Sc8
      • 2.Qd2#
    • 1...Se8
      • 2.Qd2#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Rh3#
        • 2.Qd2#
      • 1...Bd3
        • 2.Rh3#
        • 2.Qxd3#
      • 1...Be4
        • 2.Sg4#
        • 2.Qd2#
      • 1...Bf5
        • 2.Qd2#
      • 1...e5
        • 2.Qd2#
      • 1...Bxd6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxc5#
      • 1...Sxc4
        • 2.Rh3#
      • 1...Se4
        • 2.Sg4#
      • 1...Sb5
        • 2.Rh3#
      • 1...Sf5
        • 2.Qe5#
      • 1...Sb7
        • 2.Rh3#
      • 1...Sf7
        • 2.Rh3#
      • 1...Sc8
        • 2.Rh3#
      • 1...Se8
        • 2.Rh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);XP(E)::S(C),XS(c)
    • S(c);OGATE::QAR1(I)
    • S(c);OGATE::QAB1(I)
  • Tries
    • Try
      • Q(I);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAB1(I)
        • P(d);::QAB1(I)
      • Refutation
        • B(f);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I),XP(b)
    • Vars
      • S(c);XP(E)::R(G)
      • S(c);SBLOCK::S(H)
      • S(c);::R(G)
      • S(c);OGATE::QAR2(I)
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