MESON Chess Problem Database

Problem Display
PID: 207241 (4Q3/8/4p3/2n1P2N/4k1P1/5N2/2P5/3K4 w - - 0 1)

Riedel, W

Schachzeitung, 1869

4Q3/8/4p3/2n1P2N/4k1P1/5N2/2P5/3K4

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2?
      • threat
        • 2.Qc6#
      • 1...Sd7
        • 2.Qa8#
      • 1...Kd5!
  • Keys
    • 1.Qb5!
      • 1...Ke3
        • 2.Qe2#
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Sf6#
      • 1...Sb3
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...Sa6
        • 2.Qd3#
      • 1...Sb7
        • 2.Qd3#
      • 1...Sd7
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • S(b);N_GUARD::QAB(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);P-FLIGHT::QAR1(G)
      • K(a);S_FLIGHT,XS(C)::QAB1(G)
      • K(a);P_SPINS(b),S_FLIGHT::S(F)
      • S(b);N_GUARD::QAB1(G)
      • S(b);N_GUARD::QAB1(G),XS(b)
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