MESON Chess Problem Database

Problem Display
PID: 89904 (8/1p1N4/1Q6/4P3/2p1kN2/2p4P/2p1p3/2BbK3 w - - 0 1)

Lenhart, Helmut

Die Schwalbe, 1949

8/1p1N4/1Q6/4P3/2p1kN2/2p4P/2p1p3/2BbK3

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qe3#
    • 1...Kf5
      • 2.Qg6#
  • Tries
    • 1.Sxe2?
      • 1...Kd3
        • 2.Sc5#
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qg6#
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.Sxc3#
      • 1...Kf5
        • 2.Sg3#
      • 1...Bxe2!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf5
        • 2.Qg6#
      • 1...bxc6!
    • 1.Qg6+?
      • 1...Kf3
        • 2.Qg2#
      • 1...Kd4!
    • 1.Qxb7+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf5!
    • 1.h4?
      • 1...Kf5
        • 2.Qg6#
      • 1...Kf3!
    • 1.e6?
      • 1...Kf3
        • 2.Qe3#
      • 1...Kf5!
  • Keys
    • 1.Sh5!
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.Shf6#
      • 1...Kf5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT::QAR1(F)
    • K(f);S_FLIGHT::QAB1(F)
  • Tries
    • Try
      • S(D);XP(c)
      • Vars
        • K(f);S_FLIGHT::QAB(F),XP(g)
        • K(f);S_FLIGHT::S(D),XP(d)
        • K(f);S_FLIGHT::S(D)
      • Refutation
        • B(a);XS(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR1(F)
        • K(f);S_FLIGHT::QAB1(F)
      • Refutation
        • P(g);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(F)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(F);CHECK,XP(g)
      • Vars
        • K(f);P-FLIGHT::QAR1(F)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(f);S_FLIGHT::QAB1(F)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(f);S_FLIGHT::QAR1(F)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(f);S_FLIGHT::QAR1(F)
      • K(f);S_FLIGHT::QAB(F),XP(g)
      • K(f);S_FLIGHT::S(D)
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