MESON Chess Problem Database

Problem Display
PID: 29655 (2R1K3/4B2p/N7/r1Nkp1R1/1n6/1r1pP3/1n1P4/2Q5 w - - 0 1)

Zirkwitz, Thorsten

Comm., Rochade Europa, 1984

2R1K3/4B2p/N7/r1Nkp1R1/1n6/1r1pP3/1n1P4/2Q5

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rba3
      • 2.Sxb4#
    • 1...Sc4
      • 2.Qh1#
    • 1...Sc6
      • 2.Sc7#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Rxe5#
        • 2.Qd4#
        • 2.e4#
      • 1...Rxc5
        • 2.Rxe5#
      • 1...Sc4
        • 2.Qd4#
        • 2.e4#
      • 1...Sc2
        • 2.Rxe5#
        • 2.e4#
      • 1...Sc6
        • 2.Sc7#
        • 2.e4#
      • 1...Rxc3!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Rxe5#
      • 1...Ke4
        • 2.Qh1#
      • 1...Ke6
        • 2.Sc7#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::S(F),XS(d)
    • S(a);SBLOCK::QAB(A)
    • S(d);SBLOCK::S(F)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • R(e);XS(D)::R1(E),XP(g)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • S(D);
    • Threat
      • R1(E),XP(g)
    • Vars
      • K(f);N_SPINP(g),S_FLIGHT::QAB(A)
      • K(f);N_SPINP(g),S_FLIGHT::S(F)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(d);N_GUARD::QAB1(A),XS(d)
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