MESON Chess Problem Database

Problem Display
PID: 53171 (1R1N4/3pKp2/PR2p3/r1k5/8/nnBp4/1Nb5/7B w - - 0 1)

Zipf, Volker

5th Prize, Die Schwalbe, 2002

1R1N4/3pKp2/PR2p3/r1k5/8/nnBp4/1Nb5/7B

#2

8 + 9

23 Die Schwalbe 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bb4#
    • 1...d5
      • 2.Rc6#
    • 1...d6
      • 2.Rc6#
  • Tries
    • 1.Kxd7?
      • threat
        • 2.Rc6#
      • 1...Sd4
        • 2.Bb4#
      • 1...Rxa6!
    • 1.Sa4+?
      • 1...Kc4
        • 2.Rb4#
      • 1...Rxa4!
    • 1.Sxe6+?
      • 1...dxe6
        • 2.Rc6#
      • 1...fxe6!
    • 1.Rd6?
      • threat
        • 2.Bb4#
      • 1...Rb5
        • 2.Rc8#
      • 1...Sb5
        • 2.Sb7#
      • 1...Ra4!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sb7#
        • 2.Rc8#
      • 1...Rxa6
        • 2.Sb7#
      • 1...Rb5
        • 2.Sa4#
      • 1...Sb5
        • 2.Rc4#
      • 1...Sd4
        • 2.Sb7#
        • 2.Bxd4#
      • 1...d5
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(c);SBLOCK::B(C)
    • P(h);N_GUARD::R1(E)
  • Tries
    • Try
      • K(F);P-FLIGHT,XP(h)
      • Threat
        • R1(E)
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • R(e);XP(D)
    • Try
      • S(B);CHECK
      • Vars
        • K(f);P-FLIGHT::R1(E)
      • Refutation
        • R(e);XS(B)
    • Try
      • S(H);CHECK,XP(g)
      • Vars
        • P(h);XS(H)::R1(E)
      • Refutation
        • P(i);XS(H)
    • Try
      • R(E);
      • Threat
        • B(C)
      • Vars
        • R(e);SBLOCK::R(G)
        • S(b);SBLOCK::S(H)
      • Refutation
        • R(e);
  • Actual
    • R(E);
    • Threat
      • DUALS(2)
    • Vars
      • R(e);XP(D)::S(H)
      • R(e);N_GUARD::S(B)
      • S(b);N_GUARD::R1(E)
      • P(h);::R(G)
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