MESON Chess Problem Database

Problem Display
PID: 174030 (n3b3/R6p/3B3r/2R4r/pk1P3p/8/3K2Q1/3B4 w - - 0 1)

Bottacchi, Antonio

L'Illustrazione Italiana, 1917

n3b3/R6p/3B3r/2R4r/pk1P3p/8/3K2Q1/3B4

#2

7 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Rxa4#
    • 1...Bf7
      • 2.Rxa4#
  • Tries
    • 1.Kc1?
      • threat
        • 2.Qb2#
      • 1...Ka3
        • 2.Rc3#
        • 2.Qb2#
      • 1...Bf7
        • 2.Rxa4#
      • 1...a3
        • 2.Qd2#
      • 1...Rxc5+!
    • 1.Rc4+?
      • 1...Kb5
        • 2.Rb4#
      • 1...Kxc4!
    • 1.Rb5+?
      • 1...Kc4
        • 2.Rb4#
      • 1...Kxb5!
    • 1.Re5+?
      • 1...Kc4
        • 2.Qd5#
      • 1...Rxd6!
    • 1.Rf5+?
      • 1...Kc4
        • 2.Qd5#
      • 1...Rxd6!
    • 1.Rg5+?
      • 1...Kc4
        • 2.Qd5#
      • 1...Rxd6!
    • 1.Rxh5+?
      • 1...Kc4
        • 2.Qd5#
      • 1...Rxd6!
    • 1.Qb7+?
      • 1...Ka3
        • 2.Qb3#
      • 1...Bb5
        • 2.Rxa4#
      • 1...Sb6!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Qb2#
      • 1...Bb5+
        • 2.Rc4#
      • 1...Bg6+
        • 2.Rf5#
      • 1...Ka3
        • 2.Rc3#
      • 1...Bf7
        • 2.Rxa4#
      • 1...a3
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::R1(G),XP(a)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • B(h);N_GUARD::R1(G),XP(a)
        • P(a);::QAB(C)
      • Refutation
        • R(d);CHECK,P_SPINR(d),XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • R(e);P_PINP(D),XB(F)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • R(e);P_PINP(D),XB(F)
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • R(e);P_PINP(D),XB(F)
    • Try
      • R(E);CHECK,XR(d)
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • R(e);P_PINP(D),XB(F)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(a),S_FLIGHT::QAR1(C)
        • B(h);P_SPINB(h)::R1(G),XP(a)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAR2(C)
    • Vars
      • B(h);CHECK,SBLOCK::B(F)+R(E),DCHECK
      • B(h);CHECK,S_CUTR(e)::B(F)+R(E)
      • K(b);P_SPINP(a),S_FLIGHT::B(F)+R(E),DCHECK
      • B(h);N_GUARD::R1(G),XP(a)
      • P(a);::QAB(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).