MESON Chess Problem Database

Problem Display
PID: 89843 (2KB4/3p1Bp1/Q5Nn/2p2k2/7p/1P5r/1pb2N1p/2b5 w - - 0 1)

Holler, Werner

Die Schwalbe, 1998

2KB4/3p1Bp1/Q5Nn/2p2k2/7p/1P5r/1pb2N1p/2b5

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe6#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qe5#
      • 1...Sxf7
        • 2.Qg4#
      • 1...Re3
        • 2.Qh5#
      • 1...Be3
        • 2.Qxc2#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...d6
        • 2.Qe6#
      • 1...Bf4!
    • 1.Qd6?
      • threat
        • 2.Qe5#
        • 2.Qd5#
        • 2.Qxd7#
      • 1...Bxb3
        • 2.Qe5#
      • 1...h1Q
        • 2.Qe5#
        • 2.Qxd7#
      • 1...h1B
        • 2.Qe5#
        • 2.Qxd7#
      • 1...Rd3
        • 2.Sxh4#
        • 2.Qe5#
      • 1...Re3
        • 2.Sxh4#
        • 2.Qf4#
      • 1...Bf4
        • 2.Qxf4#
        • 2.Qxd7#
      • 1...Be4
        • 2.Qe5#
        • 2.Qxd7#
      • 1...Sg4
        • 2.Qxd7#
      • 1...Sxf7!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qxd7#
      • 1...Bxb3
        • 2.Qe4#
      • 1...Sxf7
        • 2.Qg4#
      • 1...Rd3
        • 2.Qe4#
      • 1...Re3
        • 2.Qf4#
      • 1...d5
        • 2.Qd7#
      • 1...d6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(j);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • S(i);N_GUARD,XB(E)::QAB1(C)
        • R(e);S_CUTB(a)::QAR2(C)
        • B(a);S_CUTR(e)::QAB(C),XB(c)
        • B(c);N_GUARD::QAB1(C),XB(c)
        • S(i);N_GUARD::QAB1(C),XS(i)
        • P(j);N_GUARD::QAB1(C)
      • Refutation
        • B(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);XP(B)::QAR1(C)
        • S(i);::QAB(C),XP(j)
      • Refutation
        • S(i);XB(E)
  • Actual
    • Q(C);
    • Threat
      • QAB(C),XP(j)
    • Vars
      • B(c);N_GUARD,XP(B)::QAB1(C)
      • S(i);N_GUARD,XB(E)::QAB1(C)
      • R(e);S_CUTB(c)::QAB1(C)
      • R(e);S_CUTB(a)::QAR1(C)
      • P(j);::QAB(C)
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