MESON Chess Problem Database

Problem Display
PID: 97002 (5N2/3p3R/3P4/2P2k2/3p2p1/3P1PQb/5Pp1/6K1 w - - 0 1)

Poulsen, Erik

Problemnoter, 1955

5N2/3p3R/3P4/2P2k2/3p2p1/3P1PQb/5Pp1/6K1

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qe5#
    • 1...Kf6
      • 2.Qf4#
    • 1...gxf3
      • 2.Rf7#
  • Tries
    • 1.Rxd7?
      • 1...Kf6
        • 2.Qf4#
      • 1...gxf3
        • 2.Rf7#
      • 1...Kg5!
    • 1.Re7?
      • threat
        • 2.Qe5#
      • 1...Kf6
        • 2.Qf4#
        • 2.Qe5#
      • 1...gxf3
        • 2.Rf7#
      • 1...Kg5!
    • 1.Rg7?
      • 1...gxf3
        • 2.Rf7#
        • 2.Qg5#
      • 1...Kf6!
    • 1.c6?
      • 1...Kg5
        • 2.Qe5#
      • 1...Kf6
        • 2.Qf4#
      • 1...gxf3
        • 2.Rf7#
      • 1...dxc6!
  • Keys
    • 1.Qh4!
      • 1...Kf4
        • 2.Qf6#
      • 1...Ke5
        • 2.Qg5#
      • 1...gxf3
        • 2.Rh5#
      • 1...g3
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(e);P-FLIGHT,P_SPINP(d)::QAR2(E)
    • K(e);P-FLIGHT::QAR2(E)
    • P(d);XP(D)::R(H)
  • Tries
    • Try
      • R(H);XP(f)
      • Vars
        • K(e);P-FLIGHT::QAR2(E)
        • P(d);XP(D)::R(H)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(d)
    • Try
      • R(H);
      • Threat
        • QAR1(E)
      • Vars
        • P(d);XP(D)::R(H)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(d)
    • Try
      • R(H);
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • P(F);
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d)::QAR2(E)
        • K(e);P-FLIGHT::QAR2(E)
        • P(d);XP(D)::R(H)
      • Refutation
        • P(f);XP(F)
  • Actual
    • Q(E);
    • Vars
      • K(e);P-FLIGHT,P_SPINP(d)::QAR2(E)
      • K(e);P-FLIGHT::QAR2(E)
      • P(d);XP(D)::R(H)
      • P(d);::R(H)
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