MESON Chess Problem Database

Problem Display
PID: 76974 (7K/2R5/5n2/4Q3/4n1Pk/6R1/3B4/8 w - - 0 1)

Havel, Miroslav

Svetozor, 1919

7K/2R5/5n2/4Q3/4n1Pk/6R1/3B4/8

#2

6 + 3

6024 Bohemian Garnets 1923

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Bg5#
    • 1...Sc3
      • 2.Bg5#
    • 1...Sc5
      • 2.Bg5#
    • 1...Sg5
      • 2.Bxg5#
    • 1...Sd6
      • 2.Bg5#
    • 1...Sd5
      • 2.Rh7#
    • 1...Sh7
      • 2.Rxh7#
    • 1...Se8
      • 2.Rh7#
  • Tries
    • 1.Rh3+?
      • 1...Kxg4
        • 2.Qe6#
      • 1...Kxh3!
    • 1.Rh7+?
      • 1...Sh5
        • 2.Rxh5#
      • 1...Sxh7!
  • Keys
    • 1.Rcc3!
      • 1...Sxd2
        • 2.Qxf6#
      • 1...Sxc3
        • 2.Bg5#
      • 1...Sxg3
        • 2.Qxg3#
      • 1...Sxg4
        • 2.Rh3#
      • 1...Sf2
        • 2.Bg5#
        • 2.Qxf6#
        • 2.Qg5#
      • 1...Sc5
        • 2.Bg5#
        • 2.Qxf6#
        • 2.Qg5#
      • 1...Sg5
        • 2.Bxg5#
        • 2.Qxg5#
      • 1...Sd6
        • 2.Bg5#
        • 2.Qxf6#
        • 2.Qg5#
      • 1...Sd5
        • 2.Qh5#
      • 1...Sh5
        • 2.Qxh5#
      • 1...Sd7
        • 2.Qh5#
      • 1...Sh7
        • 2.Qh5#
      • 1...Se8
        • 2.Qh5#
      • 1...Sg8
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
    • S(c);N_GUARD::R(E)
    • S(c);N_GUARD::R(E),XS(c)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAB(D)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • R(E);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::R1(E),XS(c)
      • Refutation
        • S(c);XR(E)
  • Actual
    • R(E);
    • Vars
      • S(a);N_GUARD,XB(A)::QAB(D),XS(c)
      • S(a);N_GUARD,XR(E)::B(A)
      • S(a);OGATE,XR(B)::QAB1(D),XS(a)
      • S(c);SBLOCK,XP(C)::R1(B)
      • S(c);N_GUARD::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XS(c)
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