MESON Chess Problem Database

Problem Display
PID: 110027 (8/Rp6/3pp3/3b4/rN1Q3K/k2p1p2/1n1n4/b1N5 w - - 0 1)

Castellari, Umberto

Il Littorale, 1929-1931

8/Rp6/3pp3/3b4/rN1Q3K/k2p1p2/1n1n4/b1N5

#2

5 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qc3#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Qb4#
      • 1...Sbc4
        • 2.Qxa1#
      • 1...Sdc4
        • 2.Qc3#
      • 1...exd5!
  • Keys
    • 1.Sbxd3!
      • threat
        • 2.Qb4#
      • 1...Sxd3
        • 2.Rxa4#
      • 1...Bc4
        • 2.Qxd6#
      • 1...Sbc4
        • 2.Qxa1#
      • 1...Sdc4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,S_CUTB(h)::QAR2(C)
  • Tries
    • Try
      • S(B);P_SPINQ(C),XB(h)
      • Threat
        • QAB1(C)
      • Vars
        • S(b);N_PINQ(C)::QAR2(C),XB(a)
        • S(c);N_PINQ(C)::QAR2(C)
      • Refutation
        • P(j);XS(B)
  • Actual
    • S(B);P_SPINQ(C),XP(e)
    • Threat
      • QAB1(C)
    • Vars
      • S(b);N_GUARD,XS(B)::R1(E),XR(g)
      • B(h);N_PINQ(C)::QAB(C),XP(i)
      • S(b);N_PINQ(C)::QAR2(C),XB(a)
      • S(c);N_PINQ(C)::QAR2(C)
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