MESON Chess Problem Database
Problem Display
PID: 199695 (1Nrkb1R1/nPp2pP1/qQrB1p1b/PBNPpKp1/4p3/8/8/3R4 w - e5 0 1)
Kallio, Timo
Suomen Shakki, 1989
#2
12 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxb7
- 2.Sxb7#
- 1...Rxc5
- 2.Rxe8#
- 1...Rxb6
- 2.Rxe8#
- 1...Rxd6
- 2.Rxe8#
- 1...Sxb5
- 2.Sxc6#
- 1...Qxb7
- Tries
- 1.Bxc6?
- threat
- 2.Rxe8#
- 1...Sxc6
- 2.Sxc6#
- 1...Qf1+!
- threat
- 1.Qxc7+?
- 1...R6xc7
- 2.Rxe8#
- 1...R8xc7!
- 1...R6xc7
- 1.bxc8Q+?
- 1...Kxc8
- 2.Rxe8#
- 1...Sxc8
- 2.Sxc6#
- 1...Qxc8+!
- 1...Kxc8
- 1.bxc8R+?
- 1...Kxc8
- 2.Rxe8#
- 1...Sxc8
- 2.Sxc6#
- 1...Qxc8+!
- 1...Kxc8
- 1.Bxc6?
- Keys
- 1.dxe5 ep!
- threat
- 2.e7#
- 1...Rxc5+
- 2.Bxc5#
- 1...fxe6+
- 2.Sxe6#
- 1...Rxd6
- 2.Rxe8#
- threat
- 1.dxe5 ep!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(d);XP(I)::S(D),XQ(d)
- R(e);XS(D)::R1(L),XB(m)
- R(e);N_SPINP(i),XQ(G)::R1(L),XB(m)
- R(e);XB(H)::R1(L),XB(m)
- S(h);N_GUARD,XB(C)::S(K),XR(e)
- Tries
- Try
- B(C);XR(e)
- Threat
- R1(L),XB(m)
- Vars
- S(h);XB(C)::S(K),XS(h)
- Refutation
- Q(d);CHECK
- Try
- Q(G);CHECK,XP(i)
- Vars
- R(e);XQ(G)::R1(L),XB(m)
- Refutation
- R(k);XQ(G)
- Try
- P(I);CHECK,XR(k)
- Vars
- K(l);N_SPINP(i),P-FLIGHT,XQ(I)::R(L),XB(m)
- S(h);SBLOCK,XQ(I)::S(K),XR(e)
- Refutation
- Q(d);CHECK,XQ(I)
- Try
- P(I);CHECK,XR(k)
- Vars
- K(l);N_SPINP(i),P-FLIGHT,XR(I)::R(L),XB(m)
- S(h);SBLOCK,XR(I)::S(K),XR(e)
- Refutation
- Q(d);CHECK,XR(I)
- Try
- Actual
- P(E);EP,XP(b)
- Threat
- P(E)
- Vars
- R(e);CHECK,OGATE,XS(D)::R(A)+B(H),XR(e)
- P(j);CHECK,XP(E)::S(D),XP(j)
- R(e);P_SPINR(e),XB(H)::R1(L),XB(m)
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).