MESON Chess Problem Database

Problem Display
PID: 50762 (2BRN3/2nQp2q/2P5/8/r3kB1P/1p5p/3p3K/2nb1R2 w - - 0 1)

Berg, Wolfgang

Prize, Problem-Echo TT, 1989

2BRN3/2nQp2q/2P5/8/r3kB1P/1p5p/3p3K/2nb1R2

#2

9 + 10

4827 FIDE Album (1989-1991) 1997
56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qg8
      • 2.Qf5#
    • 1...Qxh4
      • 2.Qf5#
    • 1...Qh6
      • 2.Qf5#
    • 1...Qg7
      • 2.Qf5#
    • 1...Qh8
      • 2.Qf5#
    • 1...Ra1
      • 2.Qd4#
    • 1...Ra2
      • 2.Qd4#
    • 1...Ra3
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Ra5
      • 2.Qd4#
    • 1...Ra6
      • 2.Qd4#
    • 1...Ra7
      • 2.Qd4#
    • 1...Ra8
      • 2.Qd4#
    • 1...Sa2
      • 2.Qd3#
    • 1...Se2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sb5
      • 2.Qe6#
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sa6
      • 2.Qe6#
      • 2.Qd5#
    • 1...Se6
      • 2.Qxe6#
      • 2.Qd5#
    • 1...Sa8
      • 2.Qe6#
      • 2.Qd5#
    • 1...Sxe8
      • 2.Qe6#
      • 2.Qd5#
    • 1...e5
      • 2.Sf6#
      • 2.Qxh7#
    • 1...e6
      • 2.Qxh7#
  • Tries
    • 1.Qxh3?
      • threat
        • 2.Qe3#
      • 1...Qxh4
        • 2.Bf5#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...e6
        • 2.Sf6#
      • 1...Sd5!
    • 1.Qxe7+?
      • 1...Se6
        • 2.Qxe6#
        • 2.Qxh7#
      • 1...Qxe7!
  • Keys
    • 1.Qxd2!
      • threat
        • 2.Qe3#
      • 1...Se6
        • 2.Qd5#
      • 1...e6
        • 2.Sd6#
      • 1...Ra2
        • 2.Rd4#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 16
  • Sets
    • Q(j);N_GUARD::QAB1(F),XQ(j)
    • Q(j);N_GUARD::QAB1(F)
    • Q(j);N_GUARD,XP(D)::QAB1(F)
    • R(f);N_GUARD::QAR1(F)
    • R(f);N_GUARD::QAR1(F),XR(f)
    • S(a);N_GUARD::QAB1(F)
    • S(a);N_GUARD::QAB1(F),XS(a)
    • S(h);N_GUARD::QAB1(F),XS(h)
    • P(i);OGATE::QAB(F),XQ(j)
  • Tries
    • Try
      • Q(F);XP(e)
      • Threat
        • QAR1(F)
      • Vars
        • Q(j);N_GUARD,P_PINQ(F),XP(D)::B(G)
        • B(b);N_GUARD::QAB1(F),XB(b)
        • S(h);N_GUARD::QAR2(F),XS(h)
        • P(i);N_GUARD::S(I)
      • Refutation
        • S(h);
    • Try
      • Q(F);CHECK,XP(i)
      • Refutation
        • Q(j);XQ(F)
  • Actual
    • Q(F);XP(c)
    • Threat
      • QAR1(F)
    • Vars
      • S(h);N_GUARD::QAB1(F)
      • P(i);N_GUARD::S(I)
      • R(f);N_GUARD,P_PINQ(F)::R1(H)
      • S(h);N_GUARD::QAB1(F),XS(h)
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