MESON Chess Problem Database

Problem Display
PID: 78243 (8/2KR4/P2p3r/1PPP4/QNkp1R2/3N4/PBPn3b/5Bq1 w - - 0 1)

Papack, Daniel

2nd Prize, Schach, 2002-2003

8/2KR4/P2p3r/1PPP4/QNkp1R2/3N4/PBPn3b/5Bq1

#2

14 + 7

23 Die Schwalbe 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Rxd4#
    • 1...Qh1
      • 2.Rxd4#
    • 1...Qg2
      • 2.Rxd4#
    • 1...Qg3
      • 2.Rxd4#
    • 1...Qg5
      • 2.Rxd4#
    • 1...Qg6
      • 2.Rxd4#
    • 1...Qg8
      • 2.Rxd4#
    • 1...Sb3
      • 2.axb3#
      • 2.cxb3#
    • 1...dxc5
      • 2.Se5#
      • 2.Sc6#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Se5#
      • 1...Qxf1
        • 2.Rxd4#
      • 1...Sxf1
        • 2.Qb3#
      • 1...dxc5+!
    • 1.Rf5?
      • threat
        • 2.Sc6#
      • 1...dxc5+
        • 2.Se5#
      • 1...Be5!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Se5#
      • 1...dxc5+
        • 2.Sc6#
      • 1...Qxf1
        • 2.Rxd4#
      • 1...Sxf1
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD,XB(A)::R1(H),XP(e)
    • Q(a);N_GUARD::R1(H),XP(e)
  • Tries
    • Try
      • K(M);P-FLIGHT
      • Threat
        • B(A)+S(E),DCHECK
      • Vars
        • Q(a);N_GUARD,XB(A)::R1(H),XP(e)
        • S(b);N_GUARD,XB(A)::QAB1(F)
      • Refutation
        • P(f);CHECK,XP(J)
    • Try
      • R(H);N_PINP(e)
      • Threat
        • QAR(F)+S(G)
      • Vars
        • P(f);CHECK,SBLOCK,XP(J)::B(A)+S(E),DCHECK
      • Refutation
        • B(c);
  • Actual
    • K(M);S_FLIGHT
    • Threat
      • B(A)+S(E),DCHECK
    • Vars
      • P(f);CHECK,XP(J)::QAR(F)+S(G)
      • Q(a);N_GUARD,XB(A)::R1(H),XP(e)
      • S(b);N_GUARD,XB(A)::QAB1(F)
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