MESON Chess Problem Database

Problem Display
PID: 98700 (8/2r1p3/p2PQ2B/3p4/Nn1kP3/2N2P2/B3P3/1bR3bK w - - 0 1)

Salazar Lopez, Francisco

Problemas, 1966

8/2r1p3/p2PQ2B/3p4/Nn1kP3/2N2P2/B3P3/1bR3bK

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.Bg7#
    • 1...Sxa2
      • 2.Qxd5#
    • 1...Sc2
      • 2.Rd1#
      • 2.Qxd5#
    • 1...Sd3
      • 2.Qxd5#
    • 1...Sc6
      • 2.Qxd5#
    • 1...a5
      • 2.Sb5#
    • 1...exd6
      • 2.Qf6#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Bg7#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...exd6
        • 2.Qf6#
      • 1...Bh2
        • 2.Be3#
      • 1...Sc6
        • 2.Rc4#
      • 1...Sd3!
    • 1.Bf4?
      • threat
        • 2.Qe5#
      • 1...Sxa2
        • 2.Qxd5#
      • 1...exd6
        • 2.Qf6#
      • 1...Sd3
        • 2.Qxd5#
      • 1...Sc6
        • 2.Qxd5#
      • 1...Bxa2!
    • 1.Rd1+?
      • 1...Sd3
        • 2.Qxd5#
      • 1...Bd3!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Bg7#
      • 1...exd6
        • 2.Qf6#
      • 1...Bh2
        • 2.Be3#
      • 1...Sd3
        • 2.Qxd5#
      • 1...Sc6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(b);SBLOCK::B(K)
    • S(c);N_GUARD,XB(C)::QAR1(J),XP(e)
    • S(c);N_GUARD::QAR1(J),XP(e)
    • P(f);N_GUARD::S(E)
    • P(h);N_GUARD,XP(I)::QAB(J)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • B(K)
      • Vars
        • S(c);OGATE,XS(E)::QAR1(J),XS(c)
        • P(h);N_GUARD,XP(I)::QAB(J)
        • B(b);N_GUARD::B(K)
        • S(c);S_CUTR(g)::R1(A)
      • Refutation
        • S(c);
    • Try
      • B(K);
      • Threat
        • QAB1(J)
      • Vars
        • S(c);N_GUARD,XB(C)::QAR1(J),XP(e)
        • P(h);N_GUARD,XP(I)::QAB(J)
        • S(c);N_GUARD::QAR1(J),XP(e)
      • Refutation
        • B(a);XB(C)
    • Try
      • R(A);CHECK
      • Vars
        • S(c);P_SPINS(c)::QAR1(J),XP(e)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(E);
    • Threat
      • B(K)
    • Vars
      • P(h);N_GUARD,XP(I)::QAB(J)
      • B(b);N_GUARD::B(K)
      • S(c);N_GUARD::QAR1(J),XP(e)
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