MESON Chess Problem Database

Problem Display
PID: 171973 (3b2K1/3R2p1/p4Q2/1ppP4/PPkq2BR/3NP3/2PP4/B7 w - - 0 1)

Segers, Marcel

Variantim, 1991

3b2K1/3R2p1/p4Q2/1ppP4/PPkq2BR/3NP3/2PP4/B7

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qxe3
      • 2.Qc3#
    • 1...Qxd3
      • 2.Be2#
    • 1...Qe4
      • 2.Qc3#
    • 1...Qf4
      • 2.Qc3#
      • 2.Qxf4#
    • 1...Qxg4
      • 2.Rxg4#
      • 2.Qc3#
    • 1...Qxd5+
      • 2.Be6#
    • 1...bxa4
      • 2.Qxa6#
    • 1...cxb4
      • 2.Qxd4#
  • Tries
    • 1.Sb2+?
      • 1...Qxb2
        • 2.Be2#
      • 1...Kxb4!
    • 1.Se5+?
      • 1...Qxe5
        • 2.Be2#
      • 1...Kxb4!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Sb2#
      • 1...Qxd5+
        • 2.Be6#
      • 1...Qxc3
        • 2.Qxc3#
      • 1...Qxd3
        • 2.Be2#
      • 1...bxa4
        • 2.Qxa6#
      • 1...cxb4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::QAR1(K),XQ(b)
    • Q(b);OGATE,XP(E)::QAR1(K)
    • Q(b);OGATEB,XS(D)::R(I)+B(H)
    • Q(b);OGATE::QAR1(K)
    • Q(b);CHECK,OGATEB,XP(J)::R(I)+B(H)
    • P(c);OGATEB,XP(F)::QAB(K),XP(e)
    • P(d);N_GUARD,XP(G)::QAR1(K),XQ(b)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • Q(b);XS(D)::R(I)+B(H),DCHECK
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • S(D);CHECK
      • Vars
        • Q(b);XS(D)::R(I)+B(H),DCHECK
      • Refutation
        • K(a);P-FLIGHT,XP(G)
  • Actual
    • B(A);
    • Threat
      • S(D)
    • Vars
      • Q(b);CHECK,OGATEB,XP(J)::R(I)+B(H)
      • Q(b);OGATE,XB(A)::QAR1(K),XQ(b)
      • Q(b);OGATEB,XS(D)::R(I)+B(H)
      • P(c);OGATEB,XP(F)::QAB(K),XP(e)
      • P(d);N_GUARD,XP(G)::QAR1(K),XQ(b)
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