MESON Chess Problem Database

Problem Display
PID: 201395 (1B6/1p6/2p5/n2p4/1PPk1p2/1p1P1Qb1/1P1NPP2/1K2n3 w - - 0 1)

Corrias, Antonio G

L'Alfiere di Re, 1922

1B6/1p6/2p5/n2p4/1PPk1p2/1p1P1Qb1/1P1NPP2/1K2n3

#2

10 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf2
      • 2.Qxf2#
      • 2.Qxf4#
    • 1...Bh4
      • 2.Qxf4#
    • 1...Sxd3
      • 2.Qxd3#
    • 1...Sxf3
      • 2.Sxf3#
    • 1...Sxc4
      • 2.Sxb3#
    • 1...dxc4
      • 2.Qe4#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.e3+?
      • 1...fxe3
        • 2.Qxe3#
      • 1...Kxd3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qg7#
      • 1...Bxf2
        • 2.Qxf4#
      • 1...Sxd3
        • 2.e3#
      • 1...Sxc4
        • 2.Sxb3#
      • 1...dxc4
        • 2.Qd7#
      • 1...Bh4
        • 2.Qxf4#
      • 1...Sf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::QAR2(G),XP(e)
    • S(a);OGATE,XP(F)::QAR1(G),XS(a)
    • S(a);XQ(G)::S(C),XS(a)
    • S(f);N_GUARD,XP(I)::S(C),XP(b)
    • P(g);N_GUARD,XP(I)::QAR1(G)
    • P(h);N_GUARD::QAR1(G),XP(g)
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • P(e);OGATE,XP(D)::QAB1(G),XP(e)
      • Refutation
        • K(d);P-FLIGHT,XP(F)
  • Actual
    • Q(G);P_PINP(e)
    • Threat
      • QAB(G)
    • Vars
      • B(c);N_GUARD,XP(E)::QAR2(G),XP(e)
      • S(a);SBLOCK,XP(F)::P(D)
      • S(f);N_GUARD,XP(I)::S(C),XP(b)
      • P(g);OGATEB,XP(I)::QAR(G)
      • B(c);N_GUARD::QAR2(G),XP(e)
      • S(a);N_GUARD::S(C),XS(a)
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Developed and maintained by Brian Stephenson.
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