MESON Chess Problem Database

Problem Display
PID: 101305 (4RB2/8/qn6/r2p2QK/2PkP3/p2N4/2P5/1N4b1 w - - 0 1)

Bottacchi, Antonio

4th HM., Good Companions (December), 1919

4RB2/8/qn6/r2p2QK/2PkP3/p2N4/2P5/1N4b1

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.Bg7#
      • 2.Qxg1#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Qd2#
        • 2.Qxg1#
        • 2.c3#
      • 1...Qxc4
        • 2.Qxg1#
      • 1...Sxc4
        • 2.c3#
      • 1...dxc4
        • 2.c3#
      • 1...dxe4
        • 2.c3#
      • 1...Bf2
        • 2.Qd2#
        • 2.c3#
      • 1...Bh2
        • 2.Qd2#
        • 2.c3#
      • 1...Be3
        • 2.Qf6#
        • 2.Qe5#
        • 2.Qg7#
        • 2.c3#
      • 1...Sa4
        • 2.Qd2#
        • 2.Qxg1#
      • 1...axb2!
    • 1.Qf6+?
      • 1...Ke3
        • 2.exd5#
      • 1...Kxc4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sb2#
      • 1...dxc4+
        • 2.Sc5#
      • 1...dxe4+
        • 2.Se5#
      • 1...Kxc4
        • 2.Qb4#
      • 1...Qxc4
        • 2.Bg7#
      • 1...Sxc4
        • 2.c3#
      • 1...Be3
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • Q(f);XP(D)::QAB(F),XB(a)
        • S(g);XP(D)::P(B)
        • P(e);P_PINQ(F),XP(D)::P(B)
        • P(e);P_PINQ(F),XP(E)::P(B)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::R(H)+P(E),XP(e)
      • Refutation
        • K(c);P-FLIGHT,XP(D)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(C)
    • Vars
      • P(e);CHECK,SBLOCK,XP(D)::QAR(F)+S(C)
      • P(e);CHECK,SBLOCK,XP(E)::QAR(F)+S(C)
      • K(c);OGATEB,P-FLIGHT,XP(D)::QAR1(F)
      • Q(f);SBLOCK,XP(D)::B(I)
      • S(g);SBLOCK,XP(D)::P(B)
      • B(a);SBLOCK::QAB1(F)
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