MESON Chess Problem Database

Problem Display
PID: 213822 (3B1Kn1/1qP2b2/Q1N4r/1pkP2R1/2N5/bB1pP3/n1RP4/2r5 w - - 0 1)

Bortoluzzi, Toni

Funkschach, 1926

3B1Kn1/1qP2b2/Q1N4r/1pkP2R1/2N5/bB1pP3/n1RP4/2r5

#2

12 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qa8
      • 2.Qb6#
    • 1...Qc8
      • 2.Qb6#
      • 2.Qa7#
    • 1...Qb6
      • 2.Qxb6#
    • 1...Qa7
      • 2.Qxa7#
    • 1...Re6
      • 2.dxe6#
    • 1...Bh5
      • 2.d6#
    • 1...Be6
      • 2.dxe6#
    • 1...Be8
      • 2.d6#
    • 1...Sf6
      • 2.Be7#
    • 1...dxc2
      • 2.d4#
  • Tries
    • 1.S4a5+?
      • 1...Rxc2
        • 2.Sxb7#
      • 1...Sc3
        • 2.Sxb7#
      • 1...dxc2
        • 2.Sxb7#
      • 1...Kd6!
    • 1.Sd6+?
      • 1...Rxc2
        • 2.Se4#
        • 2.Sxb7#
      • 1...Sc3
        • 2.Se4#
        • 2.Sxb7#
      • 1...dxc2
        • 2.Se4#
        • 2.Sxb7#
      • 1...Kxd6!
    • 1.Be7+?
      • 1...Rd6
        • 2.Bxd6#
      • 1...Sxe7!
    • 1.Qxa3+?
      • 1...Sb4
        • 2.Qxb4#
      • 1...b4!
    • 1.Qa7+?
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qxa7!
  • Keys
    • 1.S6e5!
      • threat
        • 2.Sxd3#
      • 1...Kxd5+
        • 2.Sd6#
      • 1...Kb4
        • 2.Qxa3#
      • 1...dxc2
        • 2.Sd3#
      • 1...Bg6
        • 2.Qd6#
      • 1...Sb4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(h);N_GUARD,P_PINB(K)::QAB1(H)
    • Q(h);N_GUARD::QAB1(H),XQ(h)
    • Q(h);N_GUARD::QAB(H),XQ(h)
    • R(g);OGATE::R(G)+P(F),XR(g)
    • B(i);N_GUARD::R(G)+P(F)
    • B(i);OGATE::R(G)+P(F),XB(i)
    • S(j);N_GUARD,S_CUTR(g)::B(K)
    • P(d);OGATE,XR(A)::P(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • R(a);XR(A)::S(E),XQ(h)
        • S(b);P_SPINS(b)::S(E),XQ(h)
        • P(d);XR(A)::S(E),XQ(h)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(f);S_FLIGHT,XS(E)
    • Try
      • B(K);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::B(K),XR(g)
      • Refutation
        • S(j);XB(K)
    • Try
      • Q(H);CHECK,XB(c)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(H),XS(b)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(H);CHECK
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAB1(H),XQ(h)
      • Refutation
        • Q(h);XQ(H)
  • Actual
    • S(I);
    • Threat
      • S(I),XP(d)
    • Vars
      • K(f);CHECK,P-FLIGHT,XP(F)::B(C)+S(E)
      • K(f);S_FLIGHT::QAB1(H),XB(c)
      • P(d);XR(A)::S(I)
      • B(i);S_CUTR(g)::QAB1(H)
      • S(b);SBLOCK::S(I)
HTML5 logo

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).