MESON Chess Problem Database
Problem Display
PID: 132816 (K1R1B2B/4p3/1p1Qr3/1ppNn3/2k5/P4b2/P7/1N1R4 w - - 0 1)
Boyer, Jean-Pierre
63rd Place, 2. International Team (Friendship) Match, 1967-1970
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxd1
- 2.Se3#
- 2.Sxb6#
- 1...Be2
- 2.Se3#
- 2.Sxb6#
- 1...Bg4
- 2.Se3#
- 2.Sxb6#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bh5
- 2.Se3#
- 2.Sxb6#
- 1...Sd3
- 2.Sd2#
- 1...Sg4
- 2.Rd4#
- 1...Sc6
- 2.Sxb6#
- 1...Sg6
- 2.Rd4#
- 1...Sd7
- 2.Rd4#
- 1...Sf7
- 2.Rd4#
- 1...Bxd1
- Tries
- 1.Ka7?
- threat
- 2.Se3#
- 2.Sxb6#
- 1...Rxd6
- 2.Se3#
- 1...Bxd5
- 2.Qxd5#
- 1...Sd3
- 2.Sd2#
- 2.Sxb6#
- 1...Sg4
- 2.Sxb6#
- 2.Rd4#
- 1...Sg6
- 2.Sxb6#
- 2.Rd4#
- 1...Sd7
- 2.Rd4#
- 1...Sf7
- 2.Sxb6#
- 2.Rd4#
- 1...Sc6+!
- threat
- 1.Bc6?
- threat
- 2.Se3#
- 2.Sxb6#
- 1...Bxd5
- 2.Bxd5#
- 2.Qxd5#
- 1...Sxc6
- 2.Sxb6#
- 1...Sd3
- 2.Sd2#
- 2.Sxb6#
- 1...Sg4
- 2.Sxb6#
- 1...Sg6
- 2.Sxb6#
- 1...Sf7
- 2.Sxb6#
- 1...Sd7!
- threat
- 1.Bxe5?
- threat
- 2.Rd4#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bxd1
- 2.Se3#
- 2.Sxb6#
- 1...Rxe5!
- threat
- 1.Rc6?
- threat
- 2.Se3#
- 2.Sxb6#
- 1...Bxd5
- 2.Qxd5#
- 1...Sxc6
- 2.Sxb6#
- 1...Sd3
- 2.Sd2#
- 2.Sxb6#
- 1...Sg4
- 2.Sxb6#
- 2.Rd4#
- 1...Sg6
- 2.Sxb6#
- 2.Rd4#
- 1...Sd7
- 2.Rd4#
- 1...Sf7
- 2.Sxb6#
- 2.Rd4#
- 1...b4!
- threat
- 1.Qxe5?
- threat
- 2.Rd4#
- 2.Qc3#
- 2.Qd4#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bxd1
- 2.Qd4#
- 1...Rc6
- 2.Se3#
- 2.Qc3#
- 1...b4
- 2.Rd4#
- 2.Qd4#
- 1...Rxe5!
- threat
- 1.Qc6?
- threat
- 2.Se3#
- 2.Sxb6#
- 2.Qxb5#
- 1...Rxc6
- 2.Se3#
- 1...Bxd5
- 2.Qxd5#
- 1...Sxc6
- 2.Sxb6#
- 1...Sd3
- 2.Sd2#
- 2.Sxb6#
- 1...Sg4
- 2.Sxb6#
- 2.Rd4#
- 2.Qxb5#
- 1...Sg6
- 2.Sxb6#
- 2.Rd4#
- 2.Qxb5#
- 1...Sd7
- 2.Rd4#
- 1...Sf7
- 2.Sxb6#
- 2.Rd4#
- 2.Qxb5#
- 1...b4
- 2.Se3#
- 2.Sxb6#
- 2.Qb5#
- 1...Bxd1!
- threat
- 1.Ka7?
- Keys
- 1.Qd7!
- threat
- 2.Qxb5#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bxd1
- 2.Se3#
- 1...Sxd7
- 2.Rd4#
- 1...Rc6
- 2.Se3#
- 1...Sd3
- 2.Sd2#
- 1...Sc6
- 2.Sxb6#
- 1...b4
- 2.Qb5#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- B(a);CHECK,OGATE,XS(E)::QAB1(F),XB(a)
- S(e);SBLOCK::S(A)
- S(e);::R1(B)
- S(e);N_PINS(E),N_SPINP(d)::S(E),XP(f)
- Tries
- Try
- K(G);N_SPINS(E),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(g);XQ(F)::S(E)
- B(a);OGATE,XS(E)::QAB1(F),XB(a)
- S(e);::R1(B)
- Refutation
- S(e);CHECK,N_SPINP(d)
- Try
- B(I);N_PINP(d),N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- S(e);XB(I)::S(E),XP(f)
- S(e);::S(E),XP(f)
- Refutation
- S(e);
- Try
- B(J);XS(e)
- Threat
- R1(B)
- Vars
- B(a);CHECK,OGATE,XS(E)::QAB1(F),XB(a)
- Refutation
- R(g);XB(J)
- Try
- R(H);N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- B(a);OGATE,P_PINR(H),XS(E)::QAB1(F),XB(a)
- S(e);N_SPINP(d),XR(H)::S(E),XP(f)
- S(e);::R1(B)
- Refutation
- P(c);
- Try
- Q(F);XS(e)
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,OGATE,XS(E)::QAB1(F),XB(a)
- B(a);N_PINS(E),XR(B)::QAR1(F)
- Refutation
- R(g);XQ(F)
- Try
- Q(F);N_SPINS(E)
- Threat
- DUALS(3)
- Vars
- R(g);N_SPINP(d),XQ(F)::S(E)
- B(a);OGATE,P_PINQ(F),XS(E)::QAB1(F),XB(a)
- S(e);N_SPINP(d),XQ(F)::S(E),XP(f)
- S(e);::R1(B)
- Refutation
- B(a);XR(B)
- Try
- Actual
- Q(F);
- Threat
- QAB1(F),XP(c)
- Vars
- B(a);CHECK,OGATE,XS(E)::QAB1(F),XB(a)
- B(a);N_PINS(E),XR(B)::S(E)
- S(e);XQ(F)::R1(B)
- R(g);N_PINS(E),N_SPINP(d)::S(E)
- S(e);SBLOCK::S(A)
- S(e);N_PINS(E),N_SPINP(d)::S(E),XP(f)
- P(c);::QAB1(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).