MESON Chess Problem Database

Problem Display
PID: 78953 (1N1B4/pp6/1r2Q3/k1n2Rp1/5bRq/2pr4/K2p1p2/5B2 w - - 0 1)

Witt, Andreas

Comm., Koldijk MT, 2006

1N1B4/pp6/1r2Q3/k1n2Rp1/5bRq/2pr4/K2p1p2/5B2

#2

7 + 12

102 Probleemblad 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Rxc5#
    • 1...Bg3
      • 2.Rxc5#
  • Tries
    • 1.Rxc5+?
      • 1...Kb4
        • 2.Qc4#
      • 1...Ka4!
    • 1.Qc4?
      • threat
        • 2.Rxc5#
      • 1...Rd5
        • 2.Qb5#
      • 1...Be3
        • 2.Qa4#
        • 2.Qb4#
      • 1...Be5
        • 2.Qb4#
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qa4#
        • 2.Qb4#
      • 1...Bc7
        • 2.Qa4#
      • 1...Rxd8!
    • 1.Qxb6+?
      • 1...Ka4
        • 2.Qa5#
      • 1...axb6!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Rxc5#
      • 1...Rxd8
        • 2.Qa3#
      • 1...Bxb8
        • 2.Qa4#
      • 1...Rd5
        • 2.Qb5#
      • 1...Be3
        • 2.Qa4#
        • 2.Qb4#
      • 1...Be5
        • 2.Qb4#
      • 1...Bd6
        • 2.Qa4#
        • 2.Qb4#
      • 1...Bc7
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(e);::R(D),XS(h)
  • Tries
    • Try
      • R(D);CHECK,XS(h)
      • Vars
        • K(g);N_SPINR(j),P_SPINB(e),S_FLIGHT::QAR1(E)
      • Refutation
        • K(g);N_SPINR(j),P-FLIGHT,P_SPINB(e)
    • Try
      • Q(E);
      • Threat
        • R(D),XS(h)
      • Vars
        • R(d);N_SPINS(h)::QAR1(E)
        • B(e);N_SPINR(j)::QAR1(E)
      • Refutation
        • R(d);N_SPINR(j),XB(G)
    • Try
      • Q(E);CHECK,XR(j)
      • Vars
        • K(g);N_SPINS(h),P-FLIGHT,P_SPINB(e)::QAR1(E)
      • Refutation
        • P(k);P_SPINP(k),XQ(E)
  • Actual
    • Q(E);
    • Threat
      • R(D),XS(h)
    • Vars
      • R(d);N_SPINR(j),XB(G)::QAR2(E)
      • B(e);XS(F)::QAR1(E)
      • R(d);N_SPINS(h)::QAR1(E)
      • B(e);N_SPINS(h)::QAB1(E)
      • B(e);N_SPINR(j)::QAR1(E)
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