MESON Chess Problem Database

Problem Display
PID: 214479 (3K4/8/8/2pp3N/P2kp3/4R2Q/RN2P3/B7 w - - 0 1)

Clarke, Thomas Denton

Australasian (The), 1880

3K4/8/8/2pp3N/P2kp3/4R2Q/RN2P3/B7

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sc4#
  • Tries
    • 1.Kc7?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sc4#
      • 1...c4!
    • 1.Kd7?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sc4#
      • 1...c4!
    • 1.Ke7?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sc4#
      • 1...c4!
    • 1.Kc8?
      • 1...Ke5
        • 2.Sc4#
      • 1...c4!
    • 1.Ke8?
      • 1...Ke5
        • 2.Sc4#
      • 1...c4!
    • 1.Raa3?
      • 1...Ke5
        • 2.Sc4#
      • 1...c4!
    • 1.Rea3?
      • threat
        • 2.Qc3#
      • 1...Ke5
        • 2.Sc4#
      • 1...e3
        • 2.Qxe3#
      • 1...c4!
    • 1.Rb3?
      • threat
        • 2.Qc3#
      • 1...Ke5
        • 2.Sc4#
      • 1...e3
        • 2.Qxe3#
      • 1...c4!
    • 1.Rd3+?
      • 1...Ke5
        • 2.Sc4#
      • 1...exd3!
    • 1.Qf1?
      • 1...Kxe3
        • 2.Sd1#
      • 1...Ke5
        • 2.Qf6#
      • 1...c4!
    • 1.Qg4?
      • 1...Kxe3
        • 2.Sd1#
      • 1...Ke5
        • 2.Sc4#
      • 1...c4!
    • 1.Qf5?
      • 1...Kxe3
        • 2.Sd1#
      • 1...c4!
    • 1.Qe6?
      • 1...Kxe3
        • 2.Sd1#
      • 1...c4!
    • 1.Qd7?
      • 1...Kxe3
        • 2.Sd1#
      • 1...Ke5
        • 2.Sd3#
        • 2.Sc4#
      • 1...c4!
    • 1.Qh2?
      • 1...Kxe3
        • 2.Sd1#
      • 1...c4!
    • 1.Qh4?
      • 1...Kxe3
        • 2.Sd1#
      • 1...Ke5
        • 2.Qf6#
      • 1...c4!
    • 1.a5?
      • 1...Ke5
        • 2.Sc4#
      • 1...c4!
  • Keys
    • 1.Qc8!
      • 1...Kxe3
        • 2.Sd1#
      • 1...Ke5
        • 2.Sc4#
      • 1...c4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Refutation
        • P(c);
    • Try
      • K(I);P-FLIGHT
      • Refutation
        • P(c);
    • Try
      • K(I);S_FLIGHT
      • Refutation
        • P(c);
    • Try
      • K(I);P-FLIGHT
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • K(I);P-FLIGHT
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • R(E);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);S_FLIGHT::B(A)+S(C),DCHECK
        • P(b);::QAB1(F),XP(b)
      • Refutation
        • P(c);
    • Try
      • R(E);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);S_FLIGHT::B(A)+S(C),DCHECK
        • P(b);::QAB1(F),XP(b)
      • Refutation
        • P(c);
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • P(b);XR(E)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XR(E)::S(C)
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(F)
      • Refutation
        • P(c);
    • Try
      • Q(F);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XR(E)::S(C)
        • K(a);S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XR(E)::S(C)
      • Refutation
        • P(c);
    • Try
      • Q(F);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT,XR(E)::S(C)
      • Refutation
        • P(c);
    • Try
      • Q(F);P_PINP(d)
      • Vars
        • K(a);N_SPINP(d),S_FLIGHT,XR(E)::S(C)
      • Refutation
        • P(c);
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XR(E)::S(C)
      • Refutation
        • P(c);
    • Try
      • Q(F);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XR(E)::S(C)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • P(c);
    • Try
      • P(G);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • P(c);
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT,XR(E)::S(C)
      • K(a);P_SPINP(b),S_FLIGHT::B(A)+S(C),DCHECK
      • P(c);::B(A)+S(C),XP(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).