MESON Chess Problem Database

Problem Display
PID: 277858 (B2Q4/2NN4/p2k4/3p3b/8/KR4rr/1R1P1ppB/2nn3q w - - 0 1)

Rizzetti, Dante Hugo

diagrammes, 1981

B2Q4/2NN4/p2k4/3p3b/8/KR4rr/1R1P1ppB/2nn3q

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Rb6#
    • 1...Sd3
      • 2.Rb6#
    • 1...Sc3
      • 2.Rb6#
    • 1...Se3
      • 2.Rb6#
  • Tries
    • 1.Sc5+?
      • 1...Kxc5
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Se5+?
      • 1...Kc5
        • 2.Se6#
        • 2.Qxd5#
      • 1...Kxe5!
    • 1.Sb6+?
      • 1...Kc5
        • 2.Se6#
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Sf6+?
      • 1...Kc5
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Sb8+?
      • 1...Kc5
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Sf8+?
      • 1...Kc5
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Rc3?
      • threat
        • 2.Rb6#
      • 1...Sb3
        • 2.Rc6#
      • 1...Sxb2!
    • 1.Rd3?
      • threat
        • 2.Rb6#
      • 1...Sb3
        • 2.Rxd5#
      • 1...Sxb2!
    • 1.Re3?
      • threat
        • 2.Rb6#
      • 1...Sb3
        • 2.Re6#
      • 1...Sxb2!
    • 1.Rf3?
      • threat
        • 2.Rb6#
      • 1...Sb3
        • 2.Rf6#
      • 1...Sxb2!
    • 1.Rxg3?
      • threat
        • 2.Rb6#
      • 1...Rxg3+
        • 2.Bxg3#
      • 1...Sb3
        • 2.Rg6#
      • 1...Sxb2!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Rc6#
      • 1...Sc3
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(i);N_PINR(E)::R(E)
    • S(a);N_PINR(E)::R(E)
    • S(b);N_PINR(E)::R(E)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(k);N_SPINR(f),OGATE,S_FLIGHT,XS(G)::QAR1(I),XP(h)
      • Refutation
        • K(k);S_FLIGHT
    • Try
      • S(G);CHECK,N_PINR(f)
      • Refutation
        • K(k);P_SPINR(f),S_FLIGHT,XS(G)
    • Try
      • S(G);CHECK
      • Refutation
        • K(k);S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(k);N_SPINR(f),OGATE,S_FLIGHT::QAR1(I),XP(h)
      • Refutation
        • K(k);S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(k);N_SPINR(f),OGATE,S_FLIGHT::QAR1(I),XP(h)
      • Refutation
        • K(k);S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(k);N_SPINR(f),OGATE,S_FLIGHT::QAR1(I),XP(h)
      • Refutation
        • K(k);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • R(A)
      • Vars
        • S(a);N_PINR(E)::R1(E)
      • Refutation
        • S(b);XR(A)
    • Try
      • R(E);P_PINP(h)
      • Threat
        • R(A)
      • Vars
        • S(a);N_PINR(E)::R1(E),XP(h)
      • Refutation
        • S(b);XR(A)
    • Try
      • R(E);
      • Threat
        • R(A)
      • Vars
        • S(a);N_PINR(E)::R1(E)
      • Refutation
        • S(b);XR(A)
    • Try
      • R(E);
      • Threat
        • R(A)
      • Vars
        • S(a);N_PINR(E)::R(E)
      • Refutation
        • S(b);XR(A)
    • Try
      • R(E);XR(f)
      • Threat
        • R(A)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XR(E)::B(C),XR(g)
        • S(a);N_PINR(E)::B(C)+R(E),DCHECK
      • Refutation
        • S(b);XR(A)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • S(b);N_PINR(E)::R(E)
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).