MESON Chess Problem Database

Problem Display
PID: 85830 (8/2N5/8/p1p5/kbp5/2p5/2K5/1Q6 w - - 0 1)

Speckmann, Werner

Der Tagesspiegel (Berlin), 1992

8/2N5/8/p1p5/kbp5/2p5/2K5/1Q6

#2

3 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qa1#
    • 1...Ba3
      • 2.Qb5#
  • Tries
    • 1.Sb5?
      • 1...Ba3
        • 2.Sxc3#
      • 1...Kxb5!
    • 1.Sd5?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3
        • 2.Sxc3#
        • 2.Sb6#
      • 1...Kb5!
    • 1.Sa8?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3
        • 2.Sb6#
      • 1...Kb5!
    • 1.Qe1?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3!
    • 1.Qf1?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3!
    • 1.Qg1?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3!
    • 1.Qh1?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3!
    • 1.Qb2?
      • 1...Ba3
        • 2.Qb5#
      • 1...cxb2!
  • Keys
    • 1.Qd1!
      • 1...Ka3
        • 2.Qa1#
      • 1...Ba3
        • 2.Kxc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
    • B(c);OGATE,SBLOCK::QAB1(A)
  • Tries
    • Try
      • S(C);
      • Vars
        • B(c);N_GUARD,SBLOCK::S(C),XP(a)
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT,XS(C)
    • Try
      • S(C);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • B(c);SBLOCK::S(C)
      • Refutation
        • K(b);P_SPINB(c),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Vars
        • B(c);OGATE,SBLOCK::QAB1(A)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • B(c);SBLOCK::QAB(A)+K(B),XP(a)
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