MESON Chess Problem Database

Problem Display
PID: 149802 (8/8/8/8/3K4/1B6/2pk4/5Q2 w - - 0 1)

Zepler, Erich Ernest

Die Schwalbe, 1929

8/8/8/8/3K4/1B6/2pk4/5Q2

#2

3 + 2

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...c1Q
      • 2.Qf2#
    • 1...c1S
      • 2.Qd1#
    • 1...c1B
      • 2.Qd1#
      • 2.Qf2#
    • 1...c1R
      • 2.Qf2#
  • Tries
    • 1.Bc4?
      • 1...c1Q
        • 2.Qe2#
      • 1...c1B
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#
      • 1...c1S!
    • 1.Qe2+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kxe2!
    • 1.Qd3+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Ke1!
    • 1.Qg1?
      • 1...c1Q
        • 2.Qf2#
        • 2.Qe3#
      • 1...c1S
        • 2.Qe3#
        • 2.Qd1#
      • 1...c1B
        • 2.Qf2#
        • 2.Qe3#
        • 2.Qd1#
      • 1...c1R
        • 2.Qf2#
        • 2.Qe3#
      • 1...Ke2!
    • 1.Qf2+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kd1!
  • Keys
    • 1.Ba4!
      • 1...c1Q
        • 2.Qf2#
      • 1...c1S
        • 2.Qd1#
      • 1...c1B
        • 2.Qd1#
        • 2.Qf2#
      • 1...c1R
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR2(A)
    • P(a);N_GUARD::QAR1(A)
  • Tries
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
  • Actual
    • B(B);
    • Vars
      • P(a);SBLOCK::QAR2(A)
      • P(a);N_GUARD::QAR1(A)
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Developed and maintained by Brian Stephenson.
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