MESON Chess Problem Database
Problem Display
PID: 80162 (3BB3/8/pn6/kr2N2K/1n2R2b/5R2/1N1Q4/r7 w - - 0 1)
Poisson, Christian
Rotenberg, Jacques
Wiedenhoff, Claude
1st Place, Messigny, 1997
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Ra3#
- 1...Rc1
- 2.Ra3#
- 1...Rd1
- 2.Ra3#
- 1...Re1
- 2.Ra3#
- 1...Rf1
- 2.Ra3#
- 1...Rg1
- 2.Ra3#
- 1...Rh1
- 2.Ra3#
- 1...Ra3
- 2.Rxa3#
- 1...Ra4
- 2.Sc4#
- 1...Rc5
- 2.Qxb4#
- 1...Rd5
- 2.Sc4#
- 2.Qxb4#
- 1...Rxe5+
- 2.Rxe5#
- 1...Bg5
- 2.Sec4#
- 2.Sc6#
- 1...Rb1
- Tries
- 1.Kg4?
- threat
- 2.Sec4#
- 2.Sc6#
- 1...Rxe5
- 2.Sc4#
- 2.Rxe5#
- 2.Qxb4#
- 1...Bxd8
- 2.Sc6#
- 1...Rc1
- 2.Ra3#
- 1...Rc5
- 2.Qxb4#
- 1...Rd5
- 2.Sbc4#
- 2.Sec4#
- 2.Qxb4#
- 1...Rg1+!
- threat
- 1.Kxh4?
- threat
- 2.Sec4#
- 2.Sc6#
- 1...Rxe5
- 2.Sc4#
- 2.Rxe5#
- 2.Qxb4#
- 1...Rc1
- 2.Ra3#
- 1...Rc5
- 2.Qxb4#
- 1...Rd5
- 2.Sbc4#
- 2.Sec4#
- 2.Qxb4#
- 1...Rh1+!
- threat
- 1.Kg6?
- threat
- 2.Sec4#
- 2.Sc6#
- 1...Rxe5
- 2.Sc4#
- 2.Rxe5#
- 2.Qxb4#
- 1...Bxd8
- 2.Sc6#
- 1...Rc1
- 2.Ra3#
- 1...Rc5
- 2.Qxb4#
- 1...Rd5
- 2.Sbc4#
- 2.Sec4#
- 2.Qxb4#
- 1...Rg1+!
- threat
- 1.Kh6?
- threat
- 2.Sec4#
- 2.Sc6#
- 1...Rxe5
- 2.Sc4#
- 2.Rxe5#
- 2.Qxb4#
- 1...Bxd8
- 2.Sc6#
- 1...Rc1
- 2.Ra3#
- 1...Rc5
- 2.Qxb4#
- 1...Rd5
- 2.Sbc4#
- 2.Sec4#
- 2.Qxb4#
- 1...Bg5+!
- threat
- 1.Bg5?
- threat
- 2.Sc6#
- 1...Rxe5
- 2.Qxb4#
- 1...Sa4
- 2.Sbc4#
- 2.Sec4#
- 1...Sc4
- 2.Sexc4#
- 1...Sd5
- 2.Sec4#
- 1...Sd7
- 2.Sec4#
- 1...Sa8
- 2.Sec4#
- 1...Sc8
- 2.Sec4#
- 1...Rc5
- 2.Qxb4#
- 1...Rd5
- 2.Qxb4#
- 1...Rc1!
- threat
- 1.Bxb6+?
- 1...Rxb6
- 2.Sbc4#
- 2.Sec4#
- 1...Kxb6!
- 1...Rxb6
- 1.Rf5?
- threat
- 2.Sec4#
- 2.Sc6#
- 1...Rxe5
- 2.Sc4#
- 2.Rexe5#
- 2.Rfxe5#
- 2.Qxb4#
- 1...Bxd8
- 2.Sc6#
- 1...Rc5
- 2.Sec4#
- 2.Qxb4#
- 1...Rd5
- 2.Sbc4#
- 2.Sec4#
- 2.Qxb4#
- 1...Rc1!
- threat
- 1.Rxb4?
- threat
- 2.Sc4#
- 2.Ra4#
- 2.Rxb5#
- 1...Rxb4
- 2.Sbc4#
- 2.Sec4#
- 1...Bxd8
- 2.Ra4#
- 2.Rxb5#
- 1...Rc1
- 2.Ra3#
- 2.Ra4#
- 2.Rxb5#
- 1...Ra4
- 2.Sc4#
- 2.Rxa4#
- 2.Rxb5#
- 1...Rc5
- 2.Bxb6#
- 2.Ra4#
- 2.Rc4#
- 2.Rb5#
- 1...Rd5
- 2.Sc4#
- 2.Bxb6#
- 2.Ra4#
- 2.Rd4#
- 2.Rb5#
- 1...Rxe5+!
- threat
- 1.Qd5?
- threat
- 2.Sec4#
- 1...Rxd5
- 2.Sc4#
- 1...Sxd5
- 2.Sc6#
- 1...Rc1
- 2.Ra3#
- 1...Sa2
- 2.Sc6#
- 2.Ra3#
- 2.Ra4#
- 1...Sc2
- 2.Sc6#
- 1...Sd3
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Bxd8!
- threat
- 1.Kg4?
- Keys
- 1.Qg5!
- threat
- 2.Sec4#
- 1...Rxe5
- 2.Sc4#
- 1...Rc1
- 2.Ra3#
- 1...Sa2
- 2.Sc6#
- 2.Ra3#
- 2.Ra4#
- 1...Sc2
- 2.Sc6#
- 1...Sd3
- 2.Sc6#
- 1...Sd5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- threat
- 1.Qg5!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::R(C)
- R(a);N_GUARD::R(C),XR(a)
- R(a);SBLOCK::S(A)
- R(e);N_GUARD::QAB1(B),XS(b)
- R(e);CHECK,OGATE,XS(E)::R(D),XR(e)
- Tries
- Try
- K(F);N_SPINS(E),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- B(c);XB(G)::S(E)
- R(a);N_GUARD::R(C)
- R(e);N_GUARD::QAB1(B),XS(b)
- Refutation
- R(a);CHECK
- Try
- K(F);N_SPINS(E),P-FLIGHT,XB(c)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD::R(C)
- R(e);N_GUARD::QAB1(B),XS(b)
- Refutation
- R(a);CHECK
- Try
- K(F);N_SPINS(E),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- B(c);XB(G)::S(E)
- R(a);N_GUARD::R(C)
- R(e);N_GUARD::QAB1(B),XS(b)
- Refutation
- R(a);CHECK
- Try
- K(F);N_SPINS(E),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- B(c);XB(G)::S(E)
- R(a);N_GUARD::R(C)
- R(e);N_GUARD::QAB1(B),XS(b)
- Refutation
- B(c);CHECK
- Try
- B(G);N_SPINS(E)
- Threat
- S(E)
- Vars
- R(e);N_GUARD,P_PINB(G),XS(E)::QAB1(B),XS(b)
- S(g);N_GUARD::S(E),XS(g)
- S(g);N_GUARD::S(E)
- R(e);N_GUARD::QAB1(B),XS(b)
- Refutation
- R(a);
- Try
- B(G);CHECK,XS(g)
- Refutation
- K(d);N_SPINS(b),S_FLIGHT,XB(G)
- Try
- R(C);N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- B(c);XB(G)::S(E)
- Refutation
- R(a);
- Try
- R(D);P_PINS(g),XS(b)
- Threat
- DUALS(3)
- Refutation
- R(e);CHECK,XS(E)
- Try
- Q(B);N_PINS(b),N_SPINS(E),P_PINR(e),P_PINS(g)
- Threat
- S(E)
- Vars
- R(e);N_SPINR(e),P_PINS(E),XQ(B)::S(A)
- S(b);N_GUARD,N_SPINR(e),XQ(B)::S(E)
- R(a);N_GUARD::R(C)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- Refutation
- B(c);N_SPINS(g),XB(G)
- Try
- Actual
- Q(B);N_PINS(b),N_SPINS(E),P_PINS(g)
- Threat
- S(E)
- Vars
- R(e);P_PINQ(B),P_SPINR(e),XS(E)::S(A)
- R(a);N_GUARD::R(C)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(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).