MESON Chess Problem Database
Problem Display
PID: 179545 (r2Nn3/1p1BBP2/1Np1np1q/1Qbpkb1R/R4p2/2P2PP1/6K1/8 w - - 0 1)
Lepage, Roger
diagrammes, 1974
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Sc4#
- 2.Re4#
- 1...Bf2
- 2.Sc4#
- 2.Re4#
- 1...Ba3
- 2.Sc4#
- 2.Re4#
- 2.Qe2#
- 1...Be3
- 2.Sc4#
- 2.Re4#
- 1...Bb4
- 2.Sc4#
- 2.Qe2#
- 1...Bd4
- 2.Sc4#
- 1...Bxb6
- 2.Re4#
- 1...Bd6
- 2.Sc4#
- 2.Re4#
- 2.Qe2#
- 1...Bxe7
- 2.Sc4#
- 1...Sg5
- 2.gxf4#
- 1...S6c7
- 2.Rxf5#
- 1...Sxd8
- 2.Rxf5#
- 1...Sf8
- 2.Rxf5#
- 1...d4
- 2.Qe2#
- 1...Bg1
- Tries
- 1.Bxe6?
- threat
- 2.Sd7#
- 2.Rxf5#
- 1...Qxh5
- 2.Sd7#
- 2.gxf4#
- 1...Bxb6
- 2.Re4#
- 2.Rxf5#
- 1...Bxe7
- 2.Sc4#
- 1...Qg5
- 2.Sd7#
- 1...Qg6
- 2.Sd7#
- 1...Qh7
- 2.Sd7#
- 2.gxf4#
- 1...Sd6
- 2.Sd7#
- 1...Sg7
- 2.Sd7#
- 1...Rxd8!
- threat
- 1.Qxc6?
- threat
- 2.Qxd5#
- 2.Qxe6#
- 1...Qxh5
- 2.Qxd5#
- 1...Bxb6
- 2.Qxe6#
- 1...Sxd8
- 2.Rxf5#
- 2.Qxd5#
- 1...bxc6
- 2.Sxc6#
- 1...Qg5
- 2.Qxd5#
- 1...Bd6
- 2.Qxd5#
- 1...Sd4
- 2.Qxd5#
- 1...Sg5
- 2.Qxd5#
- 2.gxf4#
- 1...S6c7
- 2.Rxf5#
- 1...S6g7
- 2.Qxd5#
- 1...Sf8
- 2.Rxf5#
- 2.Qxd5#
- 1...Sd6
- 2.Qxd5#
- 1...S8g7
- 2.Qxd5#
- 1...d4
- 2.Sc4#
- 2.Qe4#
- 2.Qd5#
- 2.Qxe6#
- 1...S8c7!
- threat
- 1.Qxc5?
- threat
- 2.Sc4#
- 2.Re4#
- 1...Qxh5
- 2.Sc4#
- 1...Sxc5
- 2.Rxf5#
- 1...fxg3
- 2.Re4#
- 1...Qg5
- 2.Sc4#
- 1...Sd4
- 2.Sc4#
- 2.Qxd4#
- 2.cxd4#
- 1...Sg5
- 2.Sc4#
- 2.Qd4#
- 2.gxf4#
- 1...Sd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Rxa4!
- threat
- 1.Bxe6?
- Keys
- 1.Bc8!
- threat
- 2.Sd7#
- 1...Bxb6
- 2.Re4#
- 1...Bxe7
- 2.Sc4#
- 1...Sxd8
- 2.Rxf5#
- 1...Sg5
- 2.gxf4#
- 1...Sf8
- 2.Rxf5#
- 1...d4
- 2.Qe2#
- threat
- 1.Bc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- B(b);P_SPINP(c)::S(H)
- B(b);P_SPINP(c),XS(H)::R1(E)
- B(b);P_SPINP(c),XB(J)::S(H)
- S(g);N_GUARD,N_SPINB(e),S_CUTQ(i)::P(D),XP(a)
- S(g);::R1(G),XB(e)
- S(g);XS(L)::R1(G),XB(e)
- P(c);N_SPINB(e),P_SPINB(b)::QAR(F)
- Tries
- Try
- B(I);XS(g)
- Threat
- DUALS(2)
- Vars
- B(b);P_SPINP(c),XB(J)::S(H)
- Q(i);N_SPINB(e),P_PINP(D)::S(H)
- Q(i);P_PINP(D)::S(H)
- S(l);::S(H)
- Refutation
- R(k);XS(L)
- Try
- Q(F);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(i);N_SPINB(e),XR(G)::QAR1(F),XP(c)
- B(b);XS(H)::QAR1(F),XS(g)
- P(j);XQ(F)::S(L),XP(j)
- Q(i);N_SPINB(e),P_PINP(D)::QAR1(F),XP(c)
- B(b);::QAR1(F),XP(c)
- S(g);::QAR1(F),XP(c)
- S(g);::R1(G),XB(e)
- S(l);::QAR1(F),XP(c)
- Refutation
- S(l);
- Try
- Q(F);P_PINP(c),XB(b)
- Threat
- DUALS(2)
- Vars
- Q(i);N_SPINB(e),XR(G)::S(H)
- S(g);N_SPINP(c),XQ(F)::R1(G),XB(e)
- P(a);XP(D)::R1(E)
- Q(i);N_SPINB(e),P_PINP(D)::S(H)
- Refutation
- R(k);XR(E)
- Try
- Actual
- B(I);
- Threat
- S(H)
- Vars
- B(b);P_SPINP(c),XS(H)::R1(E)
- B(b);P_SPINP(c),XB(J)::S(H)
- S(g);XS(L)::R1(G),XB(e)
- S(g);N_GUARD,N_SPINB(e),S_CUTQ(i)::P(D),XP(a)
- S(g);::R1(G),XB(e)
- P(c);N_SPINB(e),P_SPINB(b)::QAR(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).