MESON Chess Problem Database

Problem Display
PID: 95669 (B6q/2PQnp1p/2n5/1p1P4/3k1B2/1PR3PK/1P3N2/8 w - - 0 1)

Madeo, Mariano

L'Italia Scacchistica, 2000

B6q/2PQnp1p/2n5/1p1P4/3k1B2/1PR3PK/1P3N2/8

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Be3#
    • 1...Sg6
      • 2.dxc6#
    • 1...Sg8
      • 2.dxc6#
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Qd1#
      • 1...Kxd5
        • 2.Qd7#
      • 1...Sb4
        • 2.Bd6#
      • 1...Se5
        • 2.Be3#
      • 1...Qc8!
    • 1.Qf5?
      • threat
        • 2.Be3#
        • 2.Qd3#
        • 2.Qe4#
      • 1...Sxd5
        • 2.Qd3#
        • 2.Qe4#
      • 1...Qe5
        • 2.Qd3#
      • 1...Qc8
        • 2.Be3#
      • 1...Sb4
        • 2.Be3#
        • 2.Qe4#
      • 1...Se5
        • 2.Be3#
        • 2.Qe4#
      • 1...Sxf5!
    • 1.Qd6?
      • threat
        • 2.Be3#
        • 2.Rd3#
        • 2.Qc5#
      • 1...Qe5
        • 2.Rd3#
        • 2.Qc5#
      • 1...Sb4
        • 2.Be3#
        • 2.Qxb4#
        • 2.Qc5#
        • 2.Qb6#
      • 1...Se5
        • 2.Be3#
        • 2.Qc5#
        • 2.Qb6#
      • 1...Sf5
        • 2.Rd3#
        • 2.Qc5#
      • 1...Qc8+!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Rd3#
      • 1...Kxd5
        • 2.Bf4#
      • 1...Sb4
        • 2.Qg4#
      • 1...Se5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(c);SBLOCK::B(G)
    • S(d);N_GUARD::QAR(J)+P(H),XS(c)
    • P(b);N_GUARD::R1(D)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAR(J)
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(H)::QAR2(J)
        • S(c);::QAR(J)+B(G)
        • S(c);SBLOCK::QAR(J)+B(G),DCHECK
      • Refutation
        • Q(g);P_PINQ(J)
    • Try
      • Q(J);
      • Threat
        • DUALS(3)
      • Vars
        • Q(g);::QAR1(J)
        • Q(g);P_PINQ(J)::B(G)
      • Refutation
        • S(d);XQ(J)
    • Try
      • Q(J);
      • Threat
        • DUALS(3)
      • Refutation
        • Q(g);CHECK
  • Actual
    • B(G);
    • Threat
      • R1(D)
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(H)::QAR(J)+B(G)
      • S(c);::QAR(J)
      • S(c);SBLOCK::B(G)
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