MESON Chess Problem Database

Problem Display
PID: 264202 (br1b2B1/B7/3R4/5p2/1n2kP2/1NPp1p1N/1K1p3q/3Q2n1 w - - 0 1)

Foschini, Ettore

Comm., Het Schaakleven, 1934

br1b2B1/B7/3R4/5p2/1n2kP2/1NPp1p1N/1K1p3q/3Q2n1

#2

9 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Sxd2#
    • 1...Qh1
      • 2.Sxd2#
    • 1...Se2
      • 2.Sxd2#
    • 1...Sd5
      • 2.Re6#
    • 1...Sc6
      • 2.Bd5#
    • 1...f2
      • 2.Sxd2#
  • Tries
    • 1.Bd5+?
      • 1...Sxd5
        • 2.Re6#
      • 1...Bxd5!
    • 1.Qe2+?
      • 1...Sxe2
        • 2.Sxd2#
      • 1...dxe2
        • 2.Sxd2#
      • 1...fxe2
        • 2.Sxd2#
      • 1...Qxe2!
  • Keys
    • 1.Qxd2!
      • threat
        • 2.Sc5#
        • 2.Rd4#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Qxf4
        • 2.Qxf4#
      • 1...f2
        • 2.Qe3#
      • 1...Qf2
        • 2.Sxf2#
      • 1...Rb5
        • 2.Rd4#
      • 1...Rc8
        • 2.Rd4#
      • 1...Bd5
        • 2.Sc5#
      • 1...Bb6
        • 2.Sg5#
      • 1...Bf6
        • 2.Sc5#
      • 1...Se2
        • 2.Sc5#
        • 2.Qe3#
      • 1...Sa2
        • 2.Rd4#
      • 1...Sc2
        • 2.Qxd3#
      • 1...Sd5
        • 2.Re6#
      • 1...Sa6
        • 2.Rd4#
      • 1...Sc6
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::S(C),XP(b)
    • S(a);S_CUTQ(c)::S(C),XP(b)
    • S(f);P_PINS(C),SBLOCK::R(G)
    • S(f);N_GUARD,P_PINS(C),S_CUTB(i)::B(I)
    • P(e);S_CUTQ(c)::S(C),XP(b)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • S(f);P_PINS(C),SBLOCK,XB(I)::R(G)
      • Refutation
        • B(i);XB(I)
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);XQ(A)::S(C),XP(b)
        • P(d);XQ(A)::S(C),XP(b)
        • P(e);XQ(A)::S(C),XP(b)
      • Refutation
        • Q(c);XQ(A)
  • Actual
    • Q(A);P_SPINQ(A),XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • Q(c);CHECK,XQ(A)::S(C),XQ(c)
      • Q(c);N_PINQ(A),XP(F)::QAR1(A),XQ(c)
      • P(e);N_PINQ(A)::QAR1(A)
      • Q(c);N_GUARD::S(E),XQ(c)
      • R(j);::R1(G)
      • B(i);::S(C)
      • B(k);N_GUARD::S(E)
      • B(k);P_PINP(D)::S(C)
      • S(f);P_PINS(C)::R1(G)
      • S(f);N_PINQ(A),P_PINS(C)::QAB1(A),XP(d)
      • S(f);P_PINS(C),SBLOCK::R(G)
      • S(f);N_GUARD,P_PINS(C),S_CUTB(i)::B(I)
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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).