MESON Chess Problem Database

Problem Display
PID: 174016 (1NQ5/pq6/2n1n3/2PkP3/2rPrp2/8/2P1B3/3R1K2 w - - 0 1)

Bottacchi, Antonio

Hampshire Telegraph and Post, 1921

(First published on Fri Apr 22 1921)

1NQ5/pq6/2n1n3/2PkP3/2rPrp2/8/2P1B3/3R1K2

#2

9 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Qd7#
    • 1...Qa8
      • 2.Qd7#
    • 1...Qb1
      • 2.Qd7#
      • 2.Qxc6#
    • 1...Qb2
      • 2.Qd7#
      • 2.Qxc6#
    • 1...Qb3
      • 2.Qd7#
      • 2.Qxc6#
    • 1...Qb4
      • 2.Qd7#
      • 2.Qxc6#
    • 1...Qb5
      • 2.Qd7#
    • 1...Qb6
      • 2.Qd7#
    • 1...Qd7
      • 2.Qxd7#
    • 1...Qe7
      • 2.Qxc6#
    • 1...Qf7
      • 2.Qxc6#
    • 1...Qg7
      • 2.Qxc6#
    • 1...Qh7
      • 2.Qxc6#
    • 1...Sc7
      • 2.Qd7#
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
      • 1...Qxd7
        • 2.Qxd7#
      • 1...Rcxd4
        • 2.c4#
      • 1...Rexd4
        • 2.Bf3#
      • 1...Scxd4
        • 2.Qxb7#
      • 1...Sexd4
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(h);N_GUARD::QAR2(I)
    • Q(h);N_GUARD::QAR2(I),XQ(h)
    • Q(h);N_GUARD::QAB1(I),XS(e)
    • S(f);S_CUTQ(h)::QAR2(I)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • Q(h);OGATE,XS(H)::QAR2(I),XQ(h)
      • R(a);OGATE,P_SPINR(a),XP(E)::P(C)
      • R(b);OGATEB,P_SPINR(b),XP(E)::B(D)
      • S(e);OGATEB,P_SPINS(e),XP(E)::QAB(I),XQ(h)
      • S(f);OGATEB,P_SPINS(f),XP(E)::QAB(I)
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