MESON Chess Problem Database

Problem Display
PID: 85662 (2BR4/4p3/qn3p2/RbQnkN1p/5p2/p3bP2/1r3N1K/B7 w - - 0 1)

Carso, S

Sardella, Giuseppe

L'Italia Scacchistica, 1999

2BR4/4p3/qn3p2/RbQnkN1p/5p2/p3bP2/1r3N1K/B7

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qd4#
    • 1...Bd2
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bf1
      • 2.Qxe7#
      • 2.Qc7#
    • 1...Be2
      • 2.Qxe7#
      • 2.Qc7#
    • 1...Bd3
      • 2.Qxe7#
      • 2.Qc7#
    • 1...Ba4
      • 2.Qxe7#
      • 2.Qc7#
    • 1...Bc4
      • 2.Qxe7#
      • 2.Qc7#
    • 1...Bc6
      • 2.Qxe7#
    • 1...Be8
      • 2.Qxe7#
      • 2.Qc7#
    • 1...Sa4
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Sc4
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Sa8
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Sxc8
      • 2.Qxd5#
  • Tries
    • 1.Bxb2+?
      • 1...Bd4
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...axb2!
    • 1.Qc3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sxc3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qe4#
      • 1...Bd3
        • 2.Qc7#
      • 1...Sc3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(c);N_GUARD::QAB1(F)
    • B(c);N_GUARD,N_PINS(B)::QAB1(F)
    • B(c);N_GUARD,N_SPINR(a)::QAB1(F),XB(c)
    • B(e);::QAR2(F),XP(l)
    • S(j);N_GUARD,XB(H)::QAR1(F),XS(f)
  • Tries
    • Try
      • B(A);CHECK,N_SPINS(B),XR(a)
      • Refutation
        • P(b);XB(A)
    • Try
      • Q(F);CHECK,N_PINR(a),N_PINS(f)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(F),XB(c)
      • Refutation
        • S(f);P_SPINB(e),XQ(F)
  • Actual
    • Q(F);N_PINS(f),N_SPINS(B)
    • Threat
      • QAR1(F)
    • Vars
      • B(e);P_SPINS(f)::QAB(F)
      • S(f);N_SPINR(a),P_SPINB(e)::S(B)
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