MESON Chess Problem Database
Problem Display
PID: 133130 (4b3/5P2/1KP1pp2/1nN1k3/1BP2p2/1P1R3B/3b1N2/3R2Q1 w - - 0 1)
Boyer, Jean-Pierre
1st Prize, Die Schwalbe, 1984/II
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Rxe1#
- 2.Qxe1#
- 1...Bd7
- 2.Sxd7#
- 1...Bxf7
- 2.Sd7#
- 1...f5
- 2.Qg7#
- 1...Be1
- Tries
- 1.Re1+?
- 1...Bxe1
- 2.Qxe1#
- 1...Be3!
- 1...Bxe1
- 1.R3xd2?
- threat
- 2.Re1#
- 2.Re2#
- 2.Qe1#
- 1...Sd4
- 2.Scd3#
- 1...f3
- 2.Qh2#
- 2.Qg3#
- 1...f5
- 2.Qg7#
- 1...Sc3
- 2.Bxc3#
- 1...Sd6
- 2.Sfd3#
- 2.Bc3#
- 1...Bxc6!
- threat
- 1.Rd6?
- threat
- 2.Scd3#
- 1...Kxd6
- 2.Sd7#
- 1...Bxb4
- 2.Rxe6#
- 1...Sxd6
- 2.Sfd3#
- 1...Be3
- 2.Rxe6#
- 1...f5!
- threat
- 1.Rd7?
- threat
- 2.Sfd3#
- 2.Scd3#
- 1...Sd6
- 2.Sfd3#
- 1...f5
- 2.Qg7#
- 1...Be3
- 2.Sd3#
- 1...Bxd7!
- threat
- 1.Rd8?
- threat
- 2.Sfd3#
- 2.Scd3#
- 1...Sd6
- 2.Sfd3#
- 1...f5
- 2.Qg7#
- 1...Be3
- 2.Sd3#
- 1...Bd7!
- threat
- 1.Qe1+?
- 1...Bxe1
- 2.Rxe1#
- 1...Be3!
- 1...Bxe1
- 1.Qg5+?
- 1...f5
- 2.Sg4#
- 2.Qg7#
- 1...fxg5!
- 1...f5
- 1.Qg6?
- threat
- 2.Sg4#
- 2.Qe4#
- 1...Bxc6
- 2.Sg4#
- 1...f3
- 2.Qe4#
- 1...Sc3
- 2.Sg4#
- 1...Sd6
- 2.Sg4#
- 1...f5
- 2.Qxe6#
- 2.Qg7#
- 1...Sd4!
- threat
- 1.fxe8Q?
- threat
- 2.Sd7#
- 2.Rd5#
- 2.Qxe6#
- 1...Sd4
- 2.Sd7#
- 2.Qb8#
- 1...f5
- 2.Sd7#
- 2.Qg7#
- 2.Qxe6#
- 2.Qh8#
- 1...Be3
- 2.Rd5#
- 2.Qxe6#
- 1...Sc3
- 2.Sd7#
- 2.Qxe6#
- 2.Qb8#
- 1...Sc7
- 2.Sd7#
- 1...f3!
- threat
- 1.fxe8R?
- threat
- 2.Sd7#
- 2.Rd5#
- 2.Rxe6#
- 1...Sd4
- 2.Sd7#
- 1...f5
- 2.Sd7#
- 2.Rxe6#
- 2.Qg7#
- 1...Be3
- 2.Rd5#
- 2.Rxe6#
- 1...Sc3
- 2.Sd7#
- 2.Rxe6#
- 1...Sc7
- 2.Sd7#
- 1...f3!
- threat
- 1.Re1+?
- Keys
- 1.Rd4!
- threat
- 2.Sfd3#
- 1...Kxd4
- 2.Sg4#
- 1...Sxd4
- 2.Scd3#
- 1...f5
- 2.Qg7#
- 1...Be3
- 2.Re4#
- threat
- 1.Rd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(g);N_GUARD::S(I),XB(g)
- B(g);N_GUARD,XP(L)::S(I)
- P(f);OGATEB::QAB(B)
- Tries
- Try
- R(A);CHECK
- Vars
- B(a);OGATE,XR(A)::QAR(B),XB(a)
- Refutation
- B(a);P_PINS(I),P_SPINB(a)
- Try
- R(E);XB(a)
- Threat
- DUALS(3)
- Vars
- S(c);SBLOCK::S(I)
- P(f);OGATEB::QAB(B)
- S(c);N_GUARD::B(G),XS(c)
- Refutation
- B(g);XP(K)
- Try
- R(E);
- Threat
- S(I)
- Vars
- K(d);P_SPINB(a),S_FLIGHT,XR(E)::B(G)+S(I)
- B(a);XB(G)::R1(E),XP(e)
- S(c);SBLOCK,XR(E)::S(C)
- B(a);P_PINS(I)::R1(E),XP(e)
- Refutation
- P(f);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(c);::S(C)
- P(f);OGATEB::QAB(B)
- B(a);P_PINS(I)::S(C)
- Refutation
- B(g);XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(c);::S(C)
- P(f);OGATEB::QAB(B)
- B(a);P_PINS(I)::S(C)
- Refutation
- B(g);
- Try
- Q(B);CHECK
- Vars
- B(a);OGATE,XQ(B)::R(A),XB(a)
- Refutation
- B(a);P_PINS(I),P_SPINB(a)
- Try
- Q(B);CHECK
- Refutation
- P(f);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(g);XP(K)::S(C)
- P(b);::QAR1(B)
- S(c);::S(C)
- Refutation
- S(c);
- Try
- P(L);P_PINP(e),XB(g)
- Threat
- DUALS(3)
- Vars
- S(c);::S(I)
- Refutation
- P(b);
- Try
- P(L);P_PINP(e),XB(g)
- Threat
- DUALS(3)
- Vars
- S(c);::S(I)
- Refutation
- P(b);
- Try
- Actual
- R(E);
- Threat
- S(C)
- Vars
- K(d);P_SPINB(a),S_FLIGHT,XR(E)::QAB(B)+S(C)
- S(c);SBLOCK,XR(E)::S(I)
- P(f);OGATEB::QAB(B)
- B(a);::R1(E)
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).