MESON Chess Problem Database

Problem Display
PID: 146230 (b1R5/3R4/1p3N2/3B1p1K/qNpk1B2/2r1n3/4P3/Q7 w - - 0 1)

Montaner, Antonio

2nd Prize=, Bonus Socius Ty., 1941

b1R5/3R4/1p3N2/3B1p1K/qNpk1B2/2r1n3/4P3/Q7

#2

9 + 8

448 SEPA 1942

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rxc4#
    • 1...Sf1
      • 2.Rxc4#
    • 1...Sc2
      • 2.Rxc4#
    • 1...Sg2
      • 2.Rxc4#
    • 1...Sg4
      • 2.Rxc4#
    • 1...Sxd5
      • 2.e3#
  • Tries
    • 1.Bxe3+?
      • 1...Ke5
        • 2.Qxc3#
      • 1...Kxe3!
    • 1.Bc6+?
      • 1...Sd5
        • 2.Rxd5#
      • 1...Kc5!
    • 1.Bb7+?
      • 1...Sd5
        • 2.Rxd5#
        • 2.e3#
      • 1...Qxd7!
    • 1.Bxa8+?
      • 1...Sd5
        • 2.Rxd5#
        • 2.e3#
      • 1...Qxd7!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Be5#
      • 1...Sxd5
        • 2.Qg1#
      • 1...cxd3
        • 2.Qxc3#
      • 1...Sd1
        • 2.Bc6#
      • 1...Sf1
        • 2.Bc6#
      • 1...Sc2
        • 2.Bc6#
      • 1...Sg2
        • 2.Bc6#
      • 1...Sg4
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R1(I),XP(d)
    • S(b);OGATE,P_SPINS(b),XB(E)::P(B)
  • Tries
    • Try
      • B(D);CHECK,XS(b)
      • Vars
        • K(e);S_FLIGHT::QAB(A),XR(a)
      • Refutation
        • K(e);N_SPINR(a),S_FLIGHT,XB(D)
    • Try
      • B(E);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::R1(H),XS(b)
      • Refutation
        • K(e);N_SPINR(a),S_FLIGHT
    • Try
      • B(E);CHECK
      • Refutation
        • Q(c);XR(H)
    • Try
      • B(E);CHECK,XB(h)
      • Refutation
        • Q(c);XR(H)
  • Actual
    • S(C);
    • Threat
      • B(D)
    • Vars
      • S(b);OGATEB,P_SPINS(b),XB(E)::QAB(A)
      • P(d);XS(C)::QAB1(A),XR(a)
      • S(b);N_GUARD::R(H)+B(E)
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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).