MESON Chess Problem Database
Problem Display
PID: 202902 (K4B2/2p5/1p1N2R1/3kp3/3n2Q1/3n4/2R1N3/5Bbb w - - 0 1)
Rossomakho, Yakov V
1st Prize, Zadachi i Etyudi, 2016
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.Qxe4#
- 1...Sxc2
- 2.Qc4#
- 1...Sxe2
- 2.Qc4#
- 1...Sb3
- 2.Qe6#
- 2.Qc4#
- 1...Sf3
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Sb5
- 2.Qe6#
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...Sc6
- 2.Qe6#
- 2.Qc4#
- 1...Se6
- 2.Qxe6#
- 2.Qc4#
- 1...cxd6
- 2.Rxd6#
- 1...Be4
- Tries
- 1.Sb5?
- threat
- 2.Sxc7#
- 1...Sxb5
- 2.Qc4#
- 1...Sf4
- 2.Sec3#
- 1...Se6
- 2.Qc4#
- 1...c5
- 2.Sc7#
- 2.Rd6#
- 1...c6
- 2.Sc7#
- 2.Rd6#
- 1...e4!
- threat
- 1.Sf5?
- threat
- 2.Se7#
- 1...Sxc2
- 2.Sc3#
- 1...Sxf5
- 2.Sc3#
- 2.Qc4#
- 1...Sf4
- 2.Sc3#
- 1...Sc6
- 2.Sc3#
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...e4!
- threat
- 1.Sc8?
- threat
- 2.Se7#
- 1...Sxc2
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sf5
- 2.Sc3#
- 2.Qc4#
- 1...Sc6
- 2.Sc3#
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...e4!
- threat
- 1.Se8?
- threat
- 2.Sf6#
- 2.Sxc7#
- 1...Sxc2
- 2.Sc3#
- 2.Sxc7#
- 1...Sf4
- 2.Sc3#
- 2.Sf6#
- 1...Sc5
- 2.Sc3#
- 2.Sxc7#
- 1...Sb5
- 2.Sf6#
- 2.Qc4#
- 1...Sf5
- 2.Sc3#
- 2.Sxc7#
- 2.Qc4#
- 1...Se6
- 2.Sf6#
- 2.Qc4#
- 1...c5
- 2.Sc7#
- 2.Rd6#
- 1...c6
- 2.Sf6#
- 2.Sc7#
- 2.Rd6#
- 1...e4!
- threat
- 1.Bg2+?
- 1...Sf3
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...e4
- 2.Qxe4#
- 1...Bxg2!
- 1...Sf3
- 1.Rxc7?
- threat
- 2.Sc3#
- 1...Sxe2
- 2.Qc4#
- 1...Sc6
- 2.Qc4#
- 1...Sb5
- 2.Qe6#
- 2.Qc4#
- 1...e4!
- threat
- 1.Sb5?
- Keys
- 1.Se4!
- threat
- 2.Sf6#
- 1...Bxe4
- 2.Qd7#
- 1...Sxc2
- 2.S4c3#
- 1...Sc5
- 2.S2c3#
- 1...Sf5
- 2.S4c3#
- 1...c5
- 2.Rd6#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- B(b);N_GUARD::QAB1(D),XB(b)
- S(d);OGATE,XR(B)::QAB1(D)
- S(d);OGATE,XS(C)::QAB1(D)
- S(d);OGATE::QAB1(D)
- P(h);OGATE,XS(E)::R1(F),XP(h)
- Tries
- Try
- S(E);
- Threat
- S(E),XP(h)
- Vars
- S(d);OGATE,XS(E)::QAB1(D)
- S(c);::S(C)
- S(d);OGATE::QAB1(D)
- Refutation
- P(f);
- Try
- S(E);
- Threat
- S(E)
- Vars
- S(d);XR(B)::S(C)
- S(c);::S(C)
- S(d);OGATE::QAB1(D)
- Refutation
- P(f);
- Try
- S(E);
- Threat
- S(E)
- Vars
- S(d);XR(B)::S(C)
- S(c);::S(C)
- S(d);OGATE::QAB1(D)
- Refutation
- P(f);
- Try
- S(E);
- Threat
- DUALS(2)
- Refutation
- P(f);
- Try
- B(A);CHECK
- Vars
- P(f);P_SPINP(f)::QAB1(D),XP(f)
- Refutation
- B(b);XB(A)
- Try
- R(B);XP(h)
- Threat
- S(C)
- Vars
- S(d);OGATE,XS(C)::QAB1(D)
- S(d);OGATE::QAB1(D)
- Refutation
- P(f);
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- B(b);SBLOCK,XS(E)::QAR2(D)
- S(d);XR(B)::S(E)
- S(c);::S(C)
- S(d);::S(E)
- P(h);N_GUARD::R1(F)
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).