MESON Chess Problem Database
Problem Display
PID: 236219 (4RB2/1p5p/3NP3/1P1pk1P1/3NP1pq/n1P3br/2P3Kn/1bQR4 w - - 0 1)
Shanshin, Valery Yurevich
Variantim, 2017
#2
13 + 11
SOLUTION
- SOUND
- Sets
- 1...Qxg5
- 2.Qxg5#
- 1...b6
- 2.Sc6#
- 1...Qxg5
- Tries
- 1.Se2?
- threat
- 2.Rxd5#
- 1...Qxg5
- 2.Qxg5#
- 1...dxe4
- 2.Bg7#
- 1...d4
- 2.cxd4#
- 1...Ba2!
- threat
- 1.Sf3+?
- 1...Sxf3
- 2.Rxd5#
- 1...gxf3+!
- 1...Sxf3
- 1.S4f5?
- threat
- 2.Bg7#
- 2.Rxd5#
- 1...dxe4
- 2.Bg7#
- 1...Qh6
- 2.Rxd5#
- 1...Ba2
- 2.Bg7#
- 1...d4
- 2.Bg7#
- 2.cxd4#
- 1...Qxg5!
- threat
- 1.Rd8?
- threat
- 2.Bg7#
- 1...Qxg5
- 2.Qxg5#
- 1...dxe4
- 2.Sf7#
- 1...Qh6!
- threat
- 1.Qe3?
- threat
- 2.Sf7#
- 1...Qxg5
- 2.Qxg5#
- 1...dxe4
- 2.Qxe4#
- 1...Qh5!
- threat
- 1.Se2?
- Keys
- 1.Sb3!
- threat
- 2.Rxd5#
- 1...Qxg5
- 2.Qxg5#
- 1...dxe4
- 2.Bg7#
- 1...d4
- 2.cxd4#
- threat
- 1.Sb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(g);OGATE,XP(I)::QAR2(A),XQ(g)
- P(j);N_GUARD::S(F)
- Tries
- Try
- S(F);
- Threat
- R1(B),XP(h)
- Vars
- Q(g);OGATE,XP(I)::QAR2(A),XQ(g)
- P(h);XP(G)::B(M)
- P(h);OGATE::P(E),XP(h)
- Refutation
- B(a);
- Try
- S(F);CHECK
- Vars
- S(b);XS(F)::R1(B),XP(h)
- Refutation
- P(f);CHECK,XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(h);XP(G)::B(M)
- Q(g);::R1(B),XP(h)
- B(a);::B(M)
- Refutation
- Q(g);XP(I)
- Try
- R(L);
- Threat
- B(M)
- Vars
- Q(g);OGATE,XP(I)::QAR2(A),XQ(g)
- P(h);SBLOCK,XP(G)::S(J)
- Refutation
- Q(g);
- Try
- Q(A);
- Threat
- S(J)
- Vars
- Q(g);OGATE,XP(I)::QAR2(A),XQ(g)
- P(h);OGATE,P_SPINP(h),XP(G)::QAR1(A),XP(h)
- Refutation
- Q(g);
- Try
- Actual
- S(F);
- Threat
- R1(B),XP(h)
- Vars
- Q(g);OGATE,XP(I)::QAR2(A),XQ(g)
- P(h);XP(G)::B(M)
- P(h);OGATE::P(E),XP(h)
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).