MESON Chess Problem Database

Problem Display
PID: 158186 (8/Br2pQ2/2bpR3/R2n4/2k5/1rn5/2N1p3/2N1b2K w - - 0 1)

Bachl, Ernst

Pfalzische Schachkongress, 1952

8/Br2pQ2/2bpR3/R2n4/2k5/1rn5/2N1p3/2N1b2K

#2

7 + 10

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...R3b4
      • 2.Sa3#
    • 1...Se3+
      • 2.Re4#
    • 1...Sb4+
      • 2.Re4#
    • 1...Sf4+
      • 2.Re4#
    • 1...Sb6+
      • 2.Re4#
    • 1...Sf6+
      • 2.Re4#
    • 1...Sc7+
      • 2.Re4#
  • Tries
    • 1.Se3+?
      • 1...Sxe3+
        • 2.Re4#
      • 1...Kb4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qd3#
      • 1...Sb1
        • 2.Re4#
      • 1...Sd1
        • 2.Re4#
      • 1...Sa2
        • 2.Re4#
      • 1...Sa4
        • 2.Re4#
      • 1...Se4
        • 2.Rxe4#
      • 1...Sb5
        • 2.Qxb3#
      • 1...Se3
        • 2.Qxc6#
      • 1...Sb4
        • 2.Se3#
      • 1...Sf4
        • 2.Qxc6#
      • 1...Sb6
        • 2.Qxc6#
      • 1...Sf6
        • 2.Qxc6#
      • 1...Sc7
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,SBLOCK::S(C)
    • S(f);CHECK::QAB(G)+R(E),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(f);CHECK,XS(C)::QAB(G)+R(E),DCHECK
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(d);N_GUARD::R(E)
      • S(d);N_GUARD::R(E),XS(d)
      • S(d);OGATE::QAB1(G),XR(c)
      • S(f);OGATE,P_PINQ(G)::QAR2(G),XB(g)
      • S(f);N_GUARD,P_PINQ(G),SBLOCK::S(C)
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