MESON Chess Problem Database

Problem Display
PID: 174255 (2N4R/1rp2k2/3p1p1K/1b3p1p/B2N4/b6r/qp6/3Q4 w - - 0 1)

Buchner, Rudolf

1st Prize, Deutsche Arbeiter Schachzeitung, 1930

2N4R/1rp2k2/3p1p1K/1b3p1p/B2N4/b6r/qp6/3Q4

#2

6 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Qxh5#
    • 1...Rc3
      • 2.Qxh5#
    • 1...Rd3
      • 2.Qxh5#
    • 1...Re3
      • 2.Qxh5#
    • 1...Bf1
      • 2.Be8#
    • 1...Be2
      • 2.Be8#
    • 1...Bd3
      • 2.Be8#
    • 1...Bc4
      • 2.Be8#
    • 1...Ba6
      • 2.Be8#
    • 1...Be8
      • 2.Bxe8#
    • 1...h4
      • 2.Qh5#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qe7#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Be2
        • 2.Be8#
      • 1...d5
        • 2.Qe6#
      • 1...c5
        • 2.Sxd6#
      • 1...c6
        • 2.Qe8#
      • 1...Re3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qe7#
      • 1...Bxe2
        • 2.Be8#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Re3
        • 2.Qxh5#
      • 1...d5
        • 2.Qe6#
      • 1...c5
        • 2.Sxd6#
      • 1...c6
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • R(d);N_GUARD::QAB(A),XP(g)
    • B(e);OGATE::B(B)
    • B(e);OGATE::B(B),XB(e)
    • P(g);S_CUTR(d)::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • Q(a);N_GUARD::QAB1(A),XQ(a)
        • B(e);OGATE::B(B)
        • P(h);S_CUTQ(a)::QAB1(A)
        • P(k);N_GUARD,S_CUTB(c)::S(E),XP(h)
        • P(k);S_CUTB(e)::QAB1(A)
      • Refutation
        • R(d);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • B(e);OGATE,XQ(A)::B(B)
      • Q(a);N_GUARD::QAB1(A),XQ(a)
      • R(d);N_GUARD::QAB(A),XP(g)
      • P(h);S_CUTQ(a)::QAB1(A)
      • P(k);N_GUARD,S_CUTB(c)::S(E),XP(h)
      • P(k);S_CUTB(e)::QAB1(A)
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