MESON Chess Problem Database

Problem Display
PID: 174015 (6BK/8/5N2/2Qp4/pp5p/1k6/pr1p2R1/b1B5 w - - 0 1)

Bottacchi, Antonio

L'Illustrazione Italiana, 1920

6BK/8/5N2/2Qp4/pp5p/1k6/pr1p2R1/b1B5

#2

6 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Bxd5#
    • 1...h3
      • 2.Rg3#
  • Tries
    • 1.Qxd5+?
      • 1...Ka3
        • 2.Qxa2#
      • 1...Kc3
        • 2.Qc4#
      • 1...Kc2!
  • Keys
    • 1.Sxd5!
      • 1...Rb1+
        • 2.Sf6#
      • 1...Rc2+
        • 2.Sc3#
      • 1...Ka3
        • 2.Qxb4#
      • 1...dxc1Q
        • 2.Qxb4#
      • 1...dxc1S
        • 2.Qxb4#
      • 1...dxc1B
        • 2.Qxb4#
      • 1...dxc1R
        • 2.Qxb4#
      • 1...d1Q
        • 2.Qxb4#
      • 1...d1S
        • 2.Qxb4#
      • 1...d1B
        • 2.Qxb4#
      • 1...d1R
        • 2.Qxb4#
      • 1...a3
        • 2.Sb6#
      • 1...h3
        • 2.Rg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(c);P_PINS(D)::B(E),XP(i)
    • P(h);N_GUARD::R(B)
  • Tries
    • Try
      • Q(C);CHECK,XP(i)
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINR(c)::QAR1(C),XP(b)
        • K(e);P-FLIGHT::QAR1(C)
      • Refutation
        • K(e);P_SPINP(d),S_FLIGHT
  • Actual
    • S(D);XP(i)
    • Vars
      • R(c);CHECK::B(E)+S(D)
      • R(c);CHECK,SBLOCK::B(E)+S(D)
      • K(e);P-FLIGHT,P_SPINP(g),P_SPINR(c)::QAB1(C),XP(g)
      • P(d);XB(A)::QAR1(C),XP(g)
      • P(d);::QAR1(C),XP(g)
      • P(f);SBLOCK::B(E)+S(D)
      • P(h);N_GUARD::R(B)
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