MESON Chess Problem Database

Problem Display
PID: 233798 (8/4N1n1/2R2p2/2p1kP1p/1pK1p3/1Qn5/3B1N2/8 w - - 0 1)

Schreiber, Kurt

Freie Presse, 1989

8/4N1n1/2R2p2/2p1kP1p/1pK1p3/1Qn5/3B1N2/8

#2

7 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qg3#
    • 1...Sd1
      • 2.Qg3#
    • 1...Sa2
      • 2.Qg3#
    • 1...Sa4
      • 2.Qg3#
    • 1...Sb5
      • 2.Qg3#
    • 1...Sxf5
      • 2.Sg6#
    • 1...Se6
      • 2.Rxe6#
    • 1...Se8
      • 2.Re6#
    • 1...h4
      • 2.Sg4#
  • Tries
    • 1.Bxc3+?
      • 1...bxc3
        • 2.Qb8#
      • 1...Kf4!
    • 1.Rxc5+?
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qg3#
      • 1...Kd6!
    • 1.Qb2?
      • 1...Sxf5
        • 2.Sg6#
      • 1...Se6
        • 2.Rxe6#
      • 1...Se8
        • 2.Re6#
      • 1...b3
        • 2.Qxc3#
      • 1...h4
        • 2.Sg4#
      • 1...e3!
  • Keys
    • 1.Qc2!
      • 1...Sxf5
        • 2.Sg6#
      • 1...e3
        • 2.Sg6#
      • 1...Se2
        • 2.Qxe4#
      • 1...Sb1
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sa2
        • 2.Qxe4#
      • 1...Sa4
        • 2.Qxe4#
      • 1...Sb5
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qxe4#
      • 1...Se6
        • 2.Rxe6#
      • 1...Se8
        • 2.Re6#
      • 1...b3
        • 2.Qxc3#
      • 1...h4
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(C)
    • S(h);SBLOCK,XP(E)::S(G)
    • S(h);N_GUARD::R1(F),XS(h)
    • S(h);N_GUARD::R1(F)
    • P(f);N_GUARD::S(B)
  • Tries
    • Try
      • B(A);CHECK,XS(a)
      • Vars
        • P(b);OGATE,XB(A)::QAB(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(F);CHECK,XP(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(C);P_PINS(a)
      • Vars
        • S(h);SBLOCK,XP(E)::S(G)
        • S(h);N_GUARD::R1(F),XS(h)
        • S(h);N_GUARD::R1(F)
        • P(b);N_GUARD::QAB(C),XS(a)
        • P(f);N_GUARD::S(B)
      • Refutation
        • P(c);
  • Actual
    • Q(C);
    • Vars
      • S(h);SBLOCK,XP(E)::S(G)
      • P(c);::S(G)
      • S(a);N_GUARD::QAR1(C),XP(c)
      • S(h);N_GUARD::R1(F),XS(h)
      • S(h);N_GUARD::R1(F)
      • P(b);N_GUARD::QAB(C),XS(a)
      • P(f);N_GUARD::S(B)
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