MESON Chess Problem Database

Problem Display
PID: 187720 (8/4nB2/4Pb2/NrPk2r1/1p1B4/4Q1pb/2N4n/4K3 w - - 0 1)

Palkoska, Emil

Chess Weekly, 1909

8/4nB2/4Pb2/NrPk2r1/1p1B4/4Q1pb/2N4n/4K3

#2

8 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Bxe6#
      • 2.Qxe6#
    • 1...Bxd4
      • 2.Qxd4#
    • 1...Sf1
      • 2.Qf3#
    • 1...Sf3+
      • 2.Qxf3#
    • 1...Sg4
      • 2.Qf3#
    • 1...Sf5
      • 2.e7#
  • Keys
    • 1.Qd3!
      • threat
        • 2.Se3#
      • 1...Re5+
        • 2.Be3#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Rxa5
        • 2.Sxb4#
      • 1...Rxc5
        • 2.Bxf6#
      • 1...Bxd4
        • 2.Qxd4#
      • 1...Sf1
        • 2.Qf3#
      • 1...Sg4
        • 2.Qf3#
      • 1...Sf5
        • 2.e7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);OGATE,XB(D)::QAR1(C),XB(h)
    • S(a);N_GUARD::QAB(C)
    • S(a);CHECK,N_GUARD::QAB(C),XS(a)
    • S(i);OGATE::B(H)+P(G)
  • Actual
    • Q(C);
    • Threat
      • S(B)
    • Vars
      • R(g);CHECK,SBLOCK,S_CUTB(h)::QAR(C)+B(D)
      • S(a);CHECK,N_GUARD::QAB(C),XS(a)
      • R(e);N_GUARD,XS(E)::S(B),XP(d)
      • R(e);SBLOCK,XP(F)::QAR(C)+B(D),XB(h)
      • B(h);OGATE,P_SPINB(h),XB(D)::QAR1(C),XB(h)
      • S(a);N_GUARD::QAB(C)
      • S(i);OGATE::B(H)+P(G)
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