MESON Chess Problem Database

Problem Display
PID: 110017 (b3B1q1/4Q3/1K2P3/RP2kP2/2Pnn2N/1p1PRp1N/1Bp1p2b/6r1 w - - 0 1)

Pasqualini, Giuseppe

Il Littorale, 1929-1931

b3B1q1/4Q3/1K2P3/RP2kP2/2Pnn2N/1p1PRp1N/1Bp1p2b/6r1

#2

13 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6+
      • 2.Qxe6#
    • 1...Qf7
      • 2.exf7#
    • 1...Bc6
      • 2.bxc6#
  • Tries
    • 1.Qc5+?
      • 1...Bd5
        • 2.Bxd4#
      • 1...Kf6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Bd6#
      • 1...Sxb5
        • 2.Bb2#
      • 1...Sxf5
        • 2.Sxf3#
      • 1...Sxe6
        • 2.Bb2#
      • 1...Sc6
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(k);CHECK,OGATE,P_SPINQ(k),XP(K)::QAR1(L),XQ(k)
    • Q(k);OGATE::QAR(L)+P(K),XQ(k)
    • B(j);OGATE::R(G)+P(H),XB(j)
  • Tries
    • Try
      • Q(L);CHECK
      • Vars
        • B(j);P_SPINB(j)::B(A),XS(g)
      • Refutation
        • K(i);S_FLIGHT
  • Actual
    • B(A);N_PINS(g),P_PINS(h)
    • Threat
      • B(A)
    • Vars
      • S(g);OGATEB,XP(H)::B(A)
      • S(g);N_GUARD,SBLOCK,XP(I)::S(F),XP(f)
      • S(g);OGATEB,XP(K)::B(A)
      • S(g);S_CUTB(j)::R1(C),XS(h)
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