MESON Chess Problem Database

Problem Display
PID: 165246 (2N1N3/p3p3/4Q3/P1krb1Rr/Kpp5/P1p1n3/2n2Bpq/8 w - - 0 1)

Salamanca, Tomas

L'Alfiere di Re, 1925

2N1N3/p3p3/4Q3/P1krb1Rr/Kpp5/P1p1n3/2n2Bpq/8

#2

8 + 13

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Qxd5#
    • 1...Bf4
      • 2.Qxd5#
    • 1...Bd6
      • 2.Qxd5#
    • 1...Bf6
      • 2.Qxd5#
    • 1...Bc7
      • 2.Qxd5#
    • 1...Bg7
      • 2.Qxd5#
    • 1...Bb8
      • 2.Qxd5#
    • 1...Bh8
      • 2.Qxd5#
    • 1...Sd4
      • 2.axb4#
    • 1...a6
      • 2.Qb6#
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qxd5#
      • 1...Kd4
        • 2.Qxd5#
      • 1...axb6
        • 2.Qxb6#
      • 1...Rd6
        • 2.Qxc4#
      • 1...Rd1
        • 2.Qxc4#
      • 1...Rd2
        • 2.Qxc4#
      • 1...Rd3
        • 2.Qxc4#
      • 1...Rd4
        • 2.Qc8#
      • 1...Rd7
        • 2.Qxc4#
      • 1...Rd8
        • 2.Qxc4#
      • 1...Bd4
        • 2.Sd7#
      • 1...Sd4
        • 2.axb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 9
  • Sets
    • B(j);P_SPINR(i)::QAR1(F),XR(i)
    • S(a);N_GUARD,N_SPINS(e),SBLOCK::P(B),XP(f)
    • P(l);N_GUARD::QAB1(F)
  • Actual
    • S(G);
    • Threat
      • QAR1(F),XR(i)
    • Vars
      • K(h);S_FLIGHT::QAR1(F),XR(i)
      • P(l);OGATE,XS(G)::QAB1(F),XP(l)
      • R(i);OGATE,P_SPINB(j)::QAR1(F),XP(g)
      • R(i);N_SPINS(e),P_SPINB(j),SBLOCK::QAR(F)
      • B(j);N_SPINS(e),P_SPINR(i),SBLOCK::S(G)
      • S(a);N_GUARD,N_SPINS(e),SBLOCK::P(B),XP(f)
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