MESON Chess Problem Database

Problem Display
PID: 71942 (3Qn3/1p6/q2pP1p1/2n5/R1pkPP2/pP3RN1/8/2BK4 w - - 0 1)

Paslack, Rainer

12th Place, 08. WCCT, 2006-2008

3Qn3/1p6/q2pP1p1/2n5/R1pkPP2/pP3RN1/8/2BK4

#2

10 + 9

14561 08. WCCT Award 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Rxc4#
    • 1...Qb6
      • 2.Rxc4#
    • 1...Qc6
      • 2.Rxc4#
    • 1...Qa7
      • 2.Rxc4#
    • 1...Qa8
      • 2.Rxc4#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sc7
      • 2.Qf6#
      • 2.Qh8#
    • 1...Sg7
      • 2.Qf6#
    • 1...a2
      • 2.Bb2#
    • 1...d5
      • 2.Qxd5#
  • Tries
    • 1.Be3+?
      • 1...Kd3
        • 2.Bg1#
        • 2.Bf2#
        • 2.Bxc5#
      • 1...Kc3!
    • 1.Qg5?
      • threat
        • 2.Qd5#
      • 1...Sxe4
        • 2.Se2#
      • 1...Qc6
        • 2.Rxc4#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sc7
        • 2.Qf6#
      • 1...d5
        • 2.Qxd5#
        • 2.Qe5#
      • 1...Sd3!
    • 1.Qxd6+?
      • 1...Qxd6
        • 2.Rxc4#
      • 1...Sxd6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qc3#
      • 1...Qxa5
        • 2.Rxc4#
      • 1...Sxb3
        • 2.Qd5#
      • 1...Sxa4
        • 2.Qd5#
      • 1...Sxe4
        • 2.Se2#
      • 1...Sxe6
        • 2.Qd5#
      • 1...Sd3
        • 2.Be3#
      • 1...Sd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(e);N_GUARD::R1(F),XP(b)
    • S(i);N_GUARD::QAB(J),XS(i)
    • S(i);N_GUARD::QAB(J)
    • P(a);N_GUARD::B(A)
    • P(f);OGATE::QAR1(J),XP(f)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Vars
        • S(d);SBLOCK,XP(G)::S(E)
        • Q(e);N_GUARD::R1(F),XP(b)
        • S(i);N_GUARD::QAB(J),XS(i)
        • S(i);N_GUARD::QAB(J)
      • Refutation
        • S(d);
    • Try
      • Q(J);CHECK,XP(f)
      • Vars
        • Q(e);XQ(J)::R1(F),XP(b)
      • Refutation
        • S(i);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • Q(e);N_GUARD,XQ(J)::R1(F),XP(b)
      • S(d);OGATE,XP(C)::QAR1(J)
      • S(d);N_SPINP(b),OGATE,XR(F)::QAR1(J)
      • S(d);SBLOCK,XP(G)::S(E)
      • S(d);OGATE,XP(I)::QAR1(J)
      • S(d);SBLOCK::B(A)
      • S(d);OGATE::QAR1(J)
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