MESON Chess Problem Database

Problem Display
PID: 218512 (4n3/8/B7/P2p3R/3kp1n1/8/7B/Kb2Q3 w - - 0 1)

Nix, John Gilbert

Cincinnati Commercial, 1881

4n3/8/B7/P2p3R/3kp1n1/8/7B/Kb2Q3

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qc3#
    • 1...e3
      • 2.Qb4#
  • Tries
    • 1.Kb2?
      • threat
        • 2.Qc3#
      • 1...Kc5
        • 2.Qc3#
      • 1...e3
        • 2.Qb4#
      • 1...Bd3!
    • 1.Bg1+?
      • 1...Se3
        • 2.Bxe3#
        • 2.Qb4#
        • 2.Qxe3#
      • 1...e3
        • 2.Qb4#
      • 1...Sf2!
    • 1.Be5+?
      • 1...Kc5
        • 2.Qc3#
      • 1...Sxe5!
    • 1.Bc7?
      • threat
        • 2.Bb6#
      • 1...Kc5
        • 2.Qc3#
      • 1...e3
        • 2.Qb4#
      • 1...Sxc7!
    • 1.Rh3?
      • threat
        • 2.Qc3#
        • 2.Qb4#
      • 1...Kc5
        • 2.Qc3#
      • 1...Sxh2
        • 2.Qc3#
      • 1...e3
        • 2.Qb4#
      • 1...Ba2
        • 2.Qc3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Se5
        • 2.Qc3#
        • 2.Qe3#
      • 1...Sd6
        • 2.Qc3#
      • 1...Bd3!
    • 1.Qd2+?
      • 1...Kc5
        • 2.Qc3#
      • 1...Bd3!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Ba7#
      • 1...Kc5
        • 2.Qc3#
      • 1...e3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(e),S_FLIGHT::QAR2(B)
    • P(c);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P_SPINP(e),S_FLIGHT::QAR2(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • B(a);
    • Try
      • B(C);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAR2(B)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • B(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • S(d);XB(C)
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • K(b);P_SPINP(e),S_FLIGHT::QAR2(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • S(f);XB(C)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • S(d);XB(C)::QAB1(B)
        • P(c);::QAR2(B)
        • B(a);::QAB1(B)
        • S(d);N_GUARD::QAB1(B),XS(d)
        • S(f);::QAB1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P_SPINP(e),S_FLIGHT::QAR2(B)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • K(b);P_SPINP(e),S_FLIGHT::QAR2(B)
      • P(c);SBLOCK::QAR2(B)
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).