MESON Chess Problem Database

Problem Display
PID: 35987 (2K5/8/2N1Qp2/P2P1r2/1Bk4p/4P3/1R1pN3/2r1bB1q w - - 0 1)

Cristoffanini, Guido

Recomm., BCF 004. Ty., 1930-1931

2K5/8/2N1Qp2/P2P1r2/1Bk4p/4P3/1R1pN3/2r1bB1q

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sxc1#
      • 2.Sf4#
    • 1...Kb5
      • 2.Sc3#
    • 1...Qxd5
      • 2.Sf4#
    • 1...Rxd5
      • 2.Sg1#
    • 1...Re5
      • 2.Sg1#
    • 1...Rg5
      • 2.Sg1#
    • 1...Rh5
      • 2.Sg1#
  • Tries
    • 1.Sc3+?
      • 1...Qxf1
        • 2.Qe4#
      • 1...Rxf1!
    • 1.Se5+?
      • 1...Kb5+
        • 2.Sc3#
      • 1...Rxe5
        • 2.Sg1#
      • 1...fxe5!
    • 1.Qe4+?
      • 1...Kb5
        • 2.Sc3#
      • 1...Qxe4!
    • 1.d6+?
      • 1...Kd3
        • 2.Sxc1#
        • 2.Sf4#
      • 1...Qd5
        • 2.Sf4#
      • 1...Rd5
        • 2.Sg1#
      • 1...Kb5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qa6#
      • 1...Kd3+
        • 2.Sxc1#
      • 1...Kb5+
        • 2.Sc3#
      • 1...Qxd5
        • 2.Sf4#
      • 1...Rxd5
        • 2.Sg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(e);P_PINS(H),S_FLIGHT::B(A)+S(C),DCHECK
    • Q(c);N_GUARD,P_SPINQ(c),XP(G)::B(A)+S(C)
    • R(g);N_GUARD,P_SPINR(g),XP(G)::B(A)+S(C)
    • R(g);N_GUARD::B(A)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • Q(c);XB(A)::QAR2(I)
      • Refutation
        • R(g);XB(A)
    • Try
      • S(H);CHECK
      • Vars
        • K(e);CHECK,S_FLIGHT::B(A)+S(C),DCHECK
        • R(g);XS(H)::B(A)+S(C)
      • Refutation
        • P(h);XS(H)
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);P_PINS(H),S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • Q(c);XQ(I)
    • Try
      • P(G);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::B(A)+S(C)
        • R(g);P_SPINR(g)::B(A)+S(C)
      • Refutation
        • K(e);P_PINS(H),S_FLIGHT
  • Actual
    • S(H);
    • Threat
      • QAB(I)
    • Vars
      • K(e);CHECK,S_FLIGHT::B(A)+S(C),DCHECK,XR(a)
      • K(e);CHECK,S_FLIGHT::B(A)+S(C),DCHECK
      • Q(c);N_GUARD,P_SPINQ(c),XP(G)::B(A)+S(C)
      • R(g);N_GUARD,P_SPINR(g),XP(G)::B(A)+S(C)
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).