MESON Chess Problem Database

Problem Display
PID: 169166 (3Rn3/5P2/n2Nprb1/4k2N/K1Q2pP1/pp3P2/4r3/q7 w - - 0 1)

Gorbatenko, Yuri Grigorevich

1st HM., SuperProblem 162. TT, 2016

3Rn3/5P2/n2Nprb1/4k2N/K1Q2pP1/pp3P2/4r3/q7

#2

8 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5+
      • 2.Qxc5#
    • 1...Sb8
      • 2.Qc5#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qxe2#
        • 2.Qxf4#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Rxf5
        • 2.Qxe2#
      • 1...Bxf5
        • 2.Qxf4#
      • 1...Bxh5
        • 2.Qxe2#
      • 1...exf5
        • 2.Qxe2#
        • 2.Qd5#
      • 1...Qb2
        • 2.Qxf4#
      • 1...Qc3
        • 2.Qxc3#
        • 2.Qxf4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qb1
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qxf4#
      • 1...Qc1
        • 2.Qd4#
      • 1...Qd1
        • 2.Qxf4#
      • 1...Qe1
        • 2.Qd4#
        • 2.Qxf4#
      • 1...Qf1
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qxf4#
      • 1...Qg1
        • 2.Qxf4#
      • 1...Qa2
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qxf4#
      • 1...Re1
        • 2.Qxf4#
      • 1...Ra2
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Rb2
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Rc2
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Rd2
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Rf2
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Rg2
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Rh2
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Re3
        • 2.Qxf4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Sd6!
    • 1.Qb5+?
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Kd4!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Sxe8#
      • 1...Qxc3!
    • 1.Qe4+?
      • 1...Bxe4
        • 2.Sc4#
      • 1...Rxe4+!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Sc4#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Kd4
        • 2.Sf5#
      • 1...Kd5
        • 2.Sxe8#
      • 1...Sxd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(g);CHECK,N_GUARD::QAR2(C),XS(g)
    • S(g);N_GUARD::QAR2(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);CHECK,N_GUARD::QAR2(C),XS(g)
        • R(i);XS(F)::QAR(C),XR(b)
        • B(j);XS(F)::QAB1(C),XP(e)
        • B(j);XS(E)::QAR(C),XR(b)
        • Q(a);::QAB1(C),XP(e)
        • Q(a);N_GUARD,P_PINQ(C)::QAB1(C),XQ(a)
        • Q(a);N_GUARD::QAB1(C)
        • R(b);::QAB1(C),XP(e)
        • R(b);N_GUARD,P_PINQ(C)::QAR1(C),XR(b)
      • Refutation
        • S(k);
    • Try
      • Q(C);CHECK
      • Vars
        • S(g);CHECK,N_GUARD,P_SPINS(g)::QAR2(C),XS(g)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);P-FLIGHT::R(H)+S(F),XS(k)
      • Refutation
        • Q(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • B(j);XQ(C)::S(F)
      • Refutation
        • R(b);CHECK,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+S(F),DCHECK
    • Vars
      • S(g);CHECK,N_GUARD::QAR2(C),XS(g)
      • K(f);S_FLIGHT::R(H)+S(F),DCHECK
      • K(f);P-FLIGHT::R(H)+S(F),XS(k)
      • S(k);OGATE,P_SPINS(k),XS(F)::QAB1(C),XS(k)
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).