MESON Chess Problem Database

Problem Display
PID: 43030 (8/8/B4R2/2pRN1n1/3pkn2/8/Q7/3N1K2 w - - 0 1)

Wielgos, Oskar

Schach-Echo, 1960

8/8/B4R2/2pRN1n1/3pkn2/8/Q7/3N1K2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bd3#
    • 1...Sg2
      • 2.Bd3#
    • 1...Sd3
      • 2.Bxd3#
    • 1...Sfh3
      • 2.Bd3#
    • 1...Sh5
      • 2.Bd3#
    • 1...Sfe6
      • 2.Bd3#
    • 1...Sg6
      • 2.Bd3#
    • 1...d3
      • 2.Qc4#
  • Tries
    • 1.Sc3+?
      • 1...Ke3
        • 2.Qf2#
      • 1...dxc3!
    • 1.Qe2+?
      • 1...Kxd5
        • 2.Bc4#
        • 2.Bb7#
      • 1...Sxe2!
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sxg2!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sd2#
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf3
        • 2.Qg2#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Sxd5
        • 2.Sf2#
      • 1...Sf3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • S(c);N_GUARD::B(F)
    • S(c);N_GUARD::B(F),XS(c)
    • P(a);OGATEB::QAR2(C)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • P(a);XS(A)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(c);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB1(C),XS(e)
      • Refutation
        • S(c);XQ(C)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(C)
      • K(b);P_SPINS(c),S_FLIGHT::QAB1(C)
      • K(b);OGATEB,S_FLIGHT,XR(D)::B(F)
      • S(c);SBLOCK,XR(D)::S(A)
      • S(e);SBLOCK::S(E)
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Developed and maintained by Brian Stephenson.
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