MESON Chess Problem Database

Problem Display
PID: 196910 (8/5BN1/4r3/1P6/3Pk2P/4P3/4Q1P1/7K w - - 0 1)

Fritsch, Karl

Deutsche Schachzeitung, 1919

8/5BN1/4r3/1P6/3Pk2P/4P3/4Q1P1/7K

#2

9 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe6?
      • 1...Kf5
        • 2.Qf3#
      • 1...Kd5!
    • 1.Qc2+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kxe3!
  • Keys
    • 1.Sf5!
      • 1...Kd5
        • 2.e4#
      • 1...Kxf5
        • 2.Qf3#
      • 1...Re5
        • 2.Sg3#
        • 2.Sd6#
        • 2.Qc2#
      • 1...Ra6
        • 2.Sg3#
        • 2.Qc2#
      • 1...Rb6
        • 2.Sg3#
        • 2.Qc2#
      • 1...Rc6
        • 2.Sg3#
      • 1...Rd6
        • 2.Sg3#
        • 2.Sxd6#
        • 2.Qc2#
      • 1...Rf6
        • 2.Sg3#
        • 2.Qc2#
      • 1...Rg6
        • 2.Qc2#
      • 1...Rh6
        • 2.Sg3#
        • 2.Qc2#
      • 1...Re7
        • 2.Sg3#
        • 2.Sd6#
        • 2.Qc2#
      • 1...Re8
        • 2.Sg3#
        • 2.Sd6#
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);XR(b)
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P_SPINR(b),S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
  • Actual
    • S(I);
    • Vars
      • K(a);OGATE,P_SPINR(b),S_FLIGHT::P(D)
      • K(a);S_FLIGHT,XS(I)::QAR2(B)
      • R(b);::S(I)
      • R(b);::QAB(B)
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