MESON Chess Problem Database

Problem Display
PID: 265130 (3RR1B1/r3b3/1p1p4/1P3P2/Pq1kN1p1/BnpP2Q1/2P2P1K/8 w - - 0 1)

Cacciari, Europe

Comm., Barcelona Chess Club, 1935

3RR1B1/r3b3/1p1p4/1P3P2/Pq1kN1p1/BnpP2Q1/2P2P1K/8

#2

13 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Qe5#
      • 2.Qe3#
    • 1...Bg5
      • 2.Qe5#
    • 1...Bf6
      • 2.Qe3#
    • 1...Bxd8
      • 2.Qe3#
    • 1...Bf8
      • 2.Qe5#
      • 2.Qe3#
    • 1...d5
      • 2.Rxd5#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe3#
      • 1...Kc5
        • 2.Sxb3#
      • 1...Bg5
        • 2.Qe5#
      • 1...cxd2!
    • 1.Sc5?
      • threat
        • 2.Qe3#
      • 1...Bg5
        • 2.Qe5#
        • 2.Qxd6#
      • 1...Kxc5!
    • 1.Sg5?
      • threat
        • 2.Qe3#
      • 1...Bxg5
        • 2.Qe5#
      • 1...Kc5!
    • 1.Rxe7?
      • threat
        • 2.Qe5#
        • 2.Qe3#
      • 1...Qxb5
        • 2.Qe3#
      • 1...Qc5
        • 2.Qe3#
      • 1...Rd7
        • 2.Qe3#
      • 1...Rxe7!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Qe3#
      • 1...Kc5
        • 2.Se4#
        • 2.Qe5#
      • 1...Qxd6
        • 2.Qf4#
      • 1...Bxd6
        • 2.Qe5#
      • 1...Bg5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(i);::QAB1(F)
    • B(i);N_SPINP(g),XR(K)::QAB1(F)
    • P(g);OGATE::R1(K),XP(g)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB1(F)
      • Vars
        • K(d);N_SPINP(g),P_SPINQ(c),S_FLIGHT::S(H),XS(a)
        • B(i);::QAB1(F)
      • Refutation
        • P(b);XS(H)
    • Try
      • S(H);
      • Threat
        • QAB1(F)
      • Refutation
        • K(d);N_SPINP(g),P_SPINQ(c),S_FLIGHT,XS(H)
    • Try
      • S(H);
      • Threat
        • QAB1(F)
      • Vars
        • B(i);XS(H)::QAB1(F)
      • Refutation
        • K(d);N_SPINP(g),P_SPINQ(c),S_FLIGHT
    • Try
      • R(L);XB(i)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XP(I)::QAB1(F)
        • Q(c);::QAB1(F)
        • R(h);N_SPINP(g)::QAB1(F)
      • Refutation
        • R(h);XR(L)
  • Actual
    • S(H);XP(g)
    • Threat
      • QAB1(F)
    • Vars
      • Q(c);P_PINQ(F),P_SPINQ(c),XS(H)::QAR2(F)
      • B(i);P_PINQ(F),P_SPINB(i),XS(H)::QAB1(F)
      • B(i);::QAB1(F)
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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).