MESON Chess Problem Database
Problem Display
PID: 246715 (2R4K/N1BkNBQ1/1r2nP2/7b/2R2p2/8/4r3/8 w - - 0 1)
Shanshin, Valery Yurevich
4th Prize, Moscow Ty., 2018
#2
9 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Be8#
- 1...Bg4
- 2.Be8#
- 1...Sd4
- 2.Rd8#
- 1...Sg5
- 2.Rd8#
- 1...Sxg7
- 2.Rd8#
- 1...Sd8
- 2.Rxd8#
- 1...Sf8
- 2.Rd8#
- 1...Bf3
- Tries
- 1.Sd5?
- threat
- 2.Sxb6#
- 2.Be8#
- 1...Bxf7
- 2.Sxb6#
- 2.Qxf7#
- 1...Sxg7
- 2.Sxb6#
- 2.Rd8#
- 1...Reb2
- 2.Be8#
- 1...Rb1
- 2.Be8#
- 1...Rbb2
- 2.Be8#
- 1...Rb3
- 2.Be8#
- 1...Rb4
- 2.Be8#
- 1...Rb5
- 2.Be8#
- 1...Ra6
- 2.Be8#
- 1...Rc6
- 2.Be8#
- 1...Rd6
- 2.Be8#
- 1...Rb7
- 2.Be8#
- 1...Rb8
- 2.Be8#
- 1...Sd4
- 2.Sxb6#
- 2.Rd8#
- 1...Sc5
- 2.Sxb6#
- 2.Rd8#
- 1...Sg5
- 2.Sxb6#
- 2.Rd8#
- 1...Sd8
- 2.Sxb6#
- 2.Rxd8#
- 1...Sf8
- 2.Sxb6#
- 2.Rd8#
- 1...Sxc7!
- threat
- 1.Sf5?
- threat
- 2.Be8#
- 1...Bxf7
- 2.Qxf7#
- 1...Sxc7
- 2.R4xc7#
- 1...Sxg7
- 2.Rd8#
- 1...Sd4
- 2.Rd8#
- 1...Sg5
- 2.Rd8#
- 1...Sd8
- 2.Rxd8#
- 1...Sf8
- 2.Rd8#
- 1...Sc5!
- threat
- 1.Sg6?
- threat
- 2.Be8#
- 1...Sxg7
- 2.Sf8#
- 2.Rd8#
- 1...Sd4
- 2.Sf8#
- 2.Rd8#
- 1...Sc5
- 2.Sf8#
- 1...Sg5
- 2.Sf8#
- 2.Rd8#
- 1...Sd8
- 2.Sf8#
- 2.Rxd8#
- 1...Sf8
- 2.Sxf8#
- 2.Rd8#
- 1...Sxc7!
- threat
- 1.Bxe6+?
- 1...Rexe6
- 2.Rd8#
- 1...Rbxe6
- 2.Rd8#
- 1...Kxe6!
- 1...Rexe6
- 1.Rd4+?
- 1...Rd6
- 2.Rxd6#
- 1...Sxd4!
- 1...Rd6
- 1.Qf8?
- threat
- 2.Qe8#
- 1...Sxc7
- 2.Rd8#
- 2.Qd8#
- 1...Sxf8
- 2.Rd8#
- 1...Sg7
- 2.Rd8#
- 2.Qd8#
- 1...Bxf7!
- threat
- 1.Qg4?
- threat
- 2.Rd8#
- 1...Bxg4
- 2.Be8#
- 1...Rb8
- 2.Rd4#
- 1...Rc6!
- threat
- 1.Qg8?
- threat
- 2.Qe8#
- 1...Sxc7
- 2.Rd8#
- 2.Qd8#
- 1...Sg7
- 2.Rd8#
- 2.Qd8#
- 1...Sf8
- 2.Rd8#
- 1...Bxf7!
- threat
- 1.Sd5?
- Keys
- 1.Sec6!
- threat
- 2.Be8#
- 1...Bxf7
- 2.Qxf7#
- 1...Sxc7
- 2.Rd8#
- 1...Sxg7
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sc5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...Sf8
- 2.Rd4#
- threat
- 1.Sec6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(c);N_GUARD::B(F)
- S(e);N_GUARD::R1(H)
- S(e);N_GUARD,XQ(G)::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR(G)+B(F),DCHECK
- R(d);::QAR(G)+B(F),DCHECK
- R(d);P_PINR(H)::QAR(G)+B(F),DCHECK
- Refutation
- S(e);XB(D)
- Try
- S(E);
- Threat
- QAR(G)+B(F),DCHECK
- Vars
- B(c);OGATE,P_SPINB(c),XB(F)::QAR2(G),XB(c)
- S(e);OGATE,XB(D)::R1(A),XS(e)
- S(e);N_GUARD,XQ(G)::R1(H)
- S(e);N_GUARD::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- S(e);
- Try
- S(E);
- Threat
- QAR(G)+B(F),DCHECK
- Vars
- S(e);N_GUARD::S(E)
- Refutation
- S(e);XB(D)
- Try
- B(F);CHECK,XS(e)
- Vars
- R(a);SBLOCK,XB(F)::R1(H)
- R(d);SBLOCK,XB(F)::R1(H)
- Refutation
- K(f);S_FLIGHT,XB(F)
- Try
- R(A);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d)::R1(A),XR(d)
- Refutation
- S(e);XR(A)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- S(e);N_GUARD,XQ(G)::R1(H)
- Refutation
- B(c);XB(F)
- Try
- Q(G);P_PINS(e)
- Threat
- R1(H)
- Vars
- B(c);N_GUARD,N_SPINS(e),XQ(G)::B(F)
- R(d);N_GUARD,P_PINR(H)::R(A)
- Refutation
- R(d);
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- S(e);N_GUARD::R1(H)
- Refutation
- B(c);XB(F)
- Try
- Actual
- S(E);
- Threat
- QAR(G)+B(F),DCHECK
- Vars
- B(c);OGATE,P_SPINB(c),XB(F)::QAR2(G),XB(c)
- S(e);N_GUARD,SBLOCK,XB(D)::R1(H)
- S(e);N_GUARD,XQ(G)::R(A)
- S(e);N_GUARD::R(A),XS(e)
- S(e);N_GUARD::R(A)
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).