MESON Chess Problem Database

Problem Display
PID: 61594 (3R4/r1Q1B1qb/N1p3r1/3N4/2Pk4/1n6/7b/3KRB2 w - - 0 1)

Wielgos, Oskar

Deutsche Schachblatter, 1962

3R4/r1Q1B1qb/N1p3r1/3N4/2Pk4/1n6/7b/3KRB2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Sa1
      • 2.Bc5#
    • 1...Sc1
      • 2.Bc5#
    • 1...Sd2
      • 2.Bc5#
    • 1...Sa5
      • 2.Bc5#
    • 1...Sc5
      • 2.Bxc5#
  • Tries
    • 1.Bb4?
      • threat
        • 2.Bc3#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Rg3
        • 2.Se7#
      • 1...Rxa6!
    • 1.Qb6+?
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qxc5#
        • 2.Qb2#
      • 1...c5!
    • 1.Qxa7+?
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...c5!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qc3#
      • 1...Sxa5
        • 2.Bc5#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Rg3
        • 2.Sdc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::QAR2(G)
    • B(a);N_GUARD::QAR2(G),XB(a)
    • S(b);N_GUARD::B(H)
    • S(b);N_GUARD::B(H),XS(b)
  • Tries
    • Try
      • B(H);
      • Threat
        • B(H)
      • Vars
        • P(d);OGATE,P_SPINP(d),XS(E)::R1(I),XP(d)
        • R(e);N_GUARD,S_CUTB(a)::R(I)+S(E)
      • Refutation
        • R(f);XS(F)
    • Try
      • Q(G);CHECK
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(G);CHECK,XR(f)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(b);N_GUARD,XQ(G)::B(H)
      • P(d);OGATE,P_SPINP(d),XS(E)::R1(I),XP(d)
      • R(e);N_GUARD,S_CUTB(a)::R(I)+S(E)
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