MESON Chess Problem Database
Problem Display
PID: 227069 (2Q5/3r3B/1n2n3/2PkB3/1K6/6R1/7b/4R3 w - - 0 1)
Kovacevic, Marjan
Pilchenko, Viacheslav Karlovich
5th Prize, 64 Shakhmatnoe obozrenie, 2020
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Rb7
- 2.Qxb7#
- 1...Rd8
- 2.Qb7#
- 1...Sa4
- 2.Qxd7#
- 1...Sa8
- 2.Qxd7#
- 1...Rb7
- Tries
- 1.Ba1?
- threat
- 2.Be4#
- 2.Re5#
- 1...Rxh7
- 2.Re5#
- 2.Qxe6#
- 1...Bxg3
- 2.Be4#
- 1...Sxc8
- 2.Be4#
- 1...Sxc5
- 2.Qxc5#
- 1...Rc7
- 2.Be4#
- 2.Qxe6#
- 1...Sc7
- 2.Qb7#
- 1...Sc4
- 2.Be4#
- 1...Sf4
- 2.Re5#
- 2.Rg5#
- 1...Sg5
- 2.Re5#
- 2.Rd3#
- 1...Sg7
- 2.Re5#
- 2.Rd3#
- 1...Sd8
- 2.Re5#
- 2.Rd3#
- 1...Sf8
- 2.Re5#
- 2.Rd3#
- 1...Sd4!
- threat
- 1.Bb2?
- threat
- 2.Be4#
- 2.Re5#
- 1...Rxh7
- 2.Re5#
- 2.Qxe6#
- 1...Bxg3
- 2.Be4#
- 1...Sxc8
- 2.Be4#
- 1...Sxc5
- 2.Qxc5#
- 1...Rc7
- 2.Be4#
- 2.Qxe6#
- 1...Sc7
- 2.Qb7#
- 1...Sc4
- 2.Be4#
- 1...Sf4
- 2.Re5#
- 2.Rg5#
- 1...Sg5
- 2.Re5#
- 2.Rd3#
- 1...Sg7
- 2.Re5#
- 2.Rd3#
- 1...Sd8
- 2.Re5#
- 2.Rd3#
- 1...Sf8
- 2.Re5#
- 2.Rd3#
- 1...Sd4!
- threat
- 1.Bc3?
- threat
- 2.Be4#
- 2.Re5#
- 1...Rxh7
- 2.Re5#
- 2.Qxe6#
- 1...Bxg3
- 2.Be4#
- 1...Sxc8
- 2.Be4#
- 1...Sxc5
- 2.Qxc5#
- 1...Rc7
- 2.Be4#
- 2.Qxe6#
- 1...Sc7
- 2.Qb7#
- 1...Sc4
- 2.Be4#
- 1...Sf4
- 2.Re5#
- 2.Rg5#
- 1...Sg5
- 2.Re5#
- 2.Rd3#
- 1...Sg7
- 2.Re5#
- 2.Rd3#
- 1...Sd8
- 2.Re5#
- 2.Rd3#
- 1...Sf8
- 2.Re5#
- 2.Rd3#
- 1...Sd4!
- threat
- 1.Bg7?
- threat
- 2.Be4#
- 1...Sxc5
- 2.Qxc5#
- 1...Sxg7
- 2.Rd3#
- 1...Sc7
- 2.Qb7#
- 1...Sd4
- 2.Re5#
- 1...Sf4
- 2.Rg5#
- 1...Sg5
- 2.Rd3#
- 1...Sd8
- 2.Rd3#
- 1...Sf8
- 2.Rd3#
- 1...Rxg7!
- threat
- 1.Bh8?
- threat
- 2.Be4#
- 1...Rxh7
- 2.Qxe6#
- 1...Sxc5
- 2.Qxc5#
- 1...Sc7
- 2.Qb7#
- 1...Sg7
- 2.Rd3#
- 1...Sd4
- 2.Re5#
- 1...Sf4
- 2.Rg5#
- 1...Sg5
- 2.Rd3#
- 1...Sd8
- 2.Rd3#
- 1...Sf8
- 2.Rd3#
- 1...Rg7!
- threat
- 1.Qa8+?
- 1...Rb7
- 2.Qxb7#
- 1...Sxa8!
- 1...Rb7
- 1.Ba1?
- Keys
- 1.Bf6!
- threat
- 2.Be4#
- 1...Rxh7
- 2.Qxe6#
- 1...Sxc5
- 2.Qxc5#
- 1...Sc7
- 2.Qb7#
- 1...Sd4
- 2.Re5#
- 1...Sf4
- 2.Rg5#
- 1...Sg5
- 2.Rd3#
- 1...Sg7
- 2.Rd3#
- 1...Sd8
- 2.Rd3#
- 1...Sf8
- 2.Rd3#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 4
- Sets
- R(e);N_GUARD::QAB(G),XR(e)
- R(e);N_GUARD::QAB(G)
- S(c);N_GUARD::QAR2(G),XR(e)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(a);XR(B)::B(F)
- S(c);XQ(G)::B(F)
- S(d);OGATE,XP(D)::QAR1(G),XS(d)
- S(d);S_CUTR(e)::QAB(G)
- S(c);::B(F)
- Refutation
- S(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(a);XR(B)::B(F)
- S(c);XQ(G)::B(F)
- S(d);OGATE,XP(D)::QAR1(G),XS(d)
- S(d);S_CUTR(e)::QAB(G)
- S(c);::B(F)
- Refutation
- S(d);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(a);XR(B)::B(F)
- S(c);XQ(G)::B(F)
- S(d);OGATE,XP(D)::QAR1(G),XS(d)
- S(d);S_CUTR(e)::QAB(G)
- S(c);::B(F)
- Refutation
- S(d);
- Try
- B(E);
- Threat
- B(F)
- Vars
- S(d);OGATE,XP(D)::QAR1(G),XS(d)
- S(d);N_GUARD,XB(E)::R(B)
- S(d);S_CUTR(e)::QAB(G)
- S(d);SBLOCK::R1(A)
- S(d);N_GUARD,S_CUTB(a)::R(B)
- S(d);N_GUARD::R(B)
- Refutation
- R(e);XB(E)
- Try
- B(E);
- Threat
- B(F)
- Vars
- R(e);OGATE,XB(F)::QAB1(G),XS(d)
- S(d);OGATE,XP(D)::QAR1(G),XS(d)
- S(d);S_CUTR(e)::QAB(G)
- S(d);N_GUARD::R(B)
- S(d);SBLOCK::R1(A)
- S(d);N_GUARD,S_CUTB(a)::R(B)
- Refutation
- R(e);
- Try
- Q(G);CHECK
- Vars
- R(e);N_GUARD,P_SPINR(e)::QAB(G),XR(e)
- Refutation
- S(c);XQ(G)
- Try
- Actual
- B(E);
- Threat
- B(F)
- Vars
- R(e);OGATE,XB(F)::QAB1(G),XS(d)
- S(d);OGATE,XP(D)::QAR1(G),XS(d)
- S(d);S_CUTR(e)::QAB(G)
- S(d);SBLOCK::R1(A)
- S(d);N_GUARD,S_CUTB(a)::R(B)
- S(d);N_GUARD::R(B)
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).