MESON Chess Problem Database

Problem Display
PID: 139600 (4N3/1pBB4/5pp1/nQpkbqR1/5P2/3PP3/b5N1/5K2 w - - 0 1)

Salamanca, Tomas

Good Companions (October), 1923

4N3/1pBB4/5pp1/nQpkbqR1/5P2/3PP3/b5N1/5K2

#2

10 + 9

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3+
      • 2.Qxd3#
    • 1...Qh3
      • 2.Sxf6#
    • 1...Qe4
      • 2.Sxf6#
    • 1...Qg4
      • 2.Sxf6#
    • 1...Qxd7
      • 2.Qxd7#
    • 1...Qxf4+
      • 2.Sxf4#
    • 1...Bd4
      • 2.e4#
    • 1...Bxf4
      • 2.Sxf4#
      • 2.Sxf6#
    • 1...Bd6
      • 2.Sxf6#
    • 1...Sb3
      • 2.Qc4#
      • 2.Qxb7#
    • 1...Sc4
      • 2.Qxb7#
  • Tries
    • 1.Qxb7+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sxb7!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Qxc5#
      • 1...Qxd3+
        • 2.Qxd3#
      • 1...Qxf4+
        • 2.Sxf4#
      • 1...Qxd7
        • 2.Qxd7#
      • 1...Bd4
        • 2.e4#
      • 1...Bd6
        • 2.Sxf6#
      • 1...Sb3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(f);CHECK,N_PINP(E),OGATE,P_SPINB(e),XP(C)::QAR2(F),XQ(f)
    • Q(f);N_GUARD,N_PINP(E),P_PINS(B),P_SPINB(e)::S(J),XP(g)
    • Q(f);N_GUARD,N_PINP(E),P_SPINB(e)::S(J),XP(g)
    • Q(f);N_PINP(E),OGATE,P_SPINB(e),XB(I)::QAR2(F),XQ(f)
    • Q(f);CHECK,P_SPINB(e),XP(E)::S(B),XQ(f)
    • B(e);P_SPINQ(f),SBLOCK::P(D)
    • B(e);N_GUARD,P_SPINQ(f)::S(J),XP(g)
    • S(b);N_GUARD::QAB(F),XP(i)
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(c),XP(i)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(F),XS(b)
      • Refutation
        • S(b);XQ(F)
  • Actual
    • B(H);
    • Threat
      • QAR1(F),XP(c)
    • Vars
      • Q(f);CHECK,N_PINP(E),OGATE,P_SPINB(e),XP(C)::QAR2(F),XQ(f)
      • Q(f);CHECK,P_SPINB(e),XP(E)::S(B),XQ(f)
      • Q(f);N_PINP(E),OGATE,P_SPINB(e),XB(I)::QAR2(F),XQ(f)
      • B(e);P_SPINQ(f),SBLOCK::P(D)
      • B(e);N_GUARD,P_SPINQ(f),SBLOCK::S(J),XP(g)
      • S(b);N_GUARD,S_CUTB(a)::QAB1(F)
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