MESON Chess Problem Database
Problem Display
PID: 12264 (4q3/1B3pP1/2P3nR/1KPkBQ2/6nR/1Np1r1P1/8/1N6 w - - 0 1)
Fleck, Ferenc
Elet es Tudomany, 1977
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxc6+
- 2.Bxc6#
- 1...Qd7
- 2.cxd7#
- 1...Qxe5
- 2.c7#
- 1...Qe7
- 2.c7#
- 1...Qd8
- 2.c7#
- 1...Qf8
- 2.c7#
- 1...Qg8
- 2.c7#
- 1...Qh8
- 2.c7#
- 1...Re1
- 2.Sxc3#
- 1...Re2
- 2.Sxc3#
- 1...Re4
- 2.Sxc3#
- 1...Rxe5
- 2.Sxc3#
- 1...Sf2
- 2.Rd4#
- 1...Sh2
- 2.Rd4#
- 1...S4xe5
- 2.Rd4#
- 1...Sf6
- 2.Rd4#
- 1...Sxh6
- 2.Rd4#
- 1...Sf4
- 2.Rd6#
- 1...Sxh4
- 2.Rd6#
- 1...S6xe5
- 2.Rd6#
- 1...Se7
- 2.Rd6#
- 1...Sf8
- 2.Rd6#
- 1...Sh8
- 2.Rd6#
- 1...Qxc6+
- Tries
- 1.Bxc3+?
- 1...Qe5
- 2.c7#
- 1...S4e5
- 2.Rd4#
- 1...S6e5
- 2.Rd6#
- 1...Re5!
- 1...Qe5
- 1.Bd4+?
- 1...Qe5
- 2.c7#
- 1...Re5
- 2.Sxc3#
- 1...S6e5
- 2.Rd6#
- 1...S4e5!
- 1...Qe5
- 1.Bf4+?
- 1...Qe5
- 2.c7#
- 1...Re5
- 2.Sxc3#
- 1...S6e5
- 2.Rd6#
- 1...S4e5!
- 1...Qe5
- 1.Bd6+?
- 1...Qe5
- 2.c7#
- 1...Re5
- 2.Sxc3#
- 1...S4e5
- 2.Rd4#
- 1...S6e5!
- 1...Qe5
- 1.Bf6+?
- 1...Qe5
- 2.c7#
- 1...Re5
- 2.Sxc3#
- 1...S4e5
- 2.Rd4#
- 1...S6e5!
- 1...Qe5
- 1.Bc7+?
- 1...Re5
- 2.Sxc3#
- 1...S4e5
- 2.Rd4#
- 1...S6e5
- 2.Rd6#
- 1...Qe5!
- 1...Re5
- 1.Rxg4?
- threat
- 2.Rd4#
- 1...Qxc6+
- 2.Bxc6#
- 1...Re4
- 2.Sxc3#
- 1...Sf4
- 2.Rd6#
- 1...Rd3!
- threat
- 1.Bxc3+?
- Keys
- 1.Bb8+!
- 1...Qe5
- 2.c7#
- 1...Re5
- 2.Sxc3#
- 1...S4e5
- 2.Rd4#
- 1...S6e5
- 2.Rd6#
- 1...Qe5
- 1.Bb8+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 19
- Sets
- Q(g);CHECK,OGATE,P_SPINQ(g),XP(I)::B(K),XQ(g)
- Q(g);::B(K)+P(I),XQ(g)
- Q(g);N_PINP(I),P_SPINQ(g),XB(G)::B(K)+P(I)
- Q(g);N_PINP(I)::B(K)+P(I)
- R(b);N_GUARD::S(A),XP(a)
- R(b);N_GUARD,P_SPINR(b),XB(G)::S(A),XP(a)
- S(c);OGATE::R1(D)
- S(c);OGATE,P_SPINS(c),XB(G)::R1(D)
- S(c);OGATE,XR(J)::R1(D)
- S(e);OGATE::R1(J)
- S(e);OGATE,XR(D)::R1(J)
- S(e);OGATE,P_SPINS(e),XB(G)::R1(J)
- Tries
- Try
- B(G);CHECK,XP(a)
- Vars
- Q(g);N_PINP(I),P_SPINQ(g)::B(K)+P(I)
- S(c);OGATE,P_SPINS(c)::R1(D)
- S(e);OGATE,P_SPINS(e)::R1(J)
- Refutation
- R(b);P_SPINR(b)
- Try
- B(G);CHECK
- Vars
- Q(g);N_PINP(I),P_SPINQ(g)::B(K)+P(I)
- R(b);P_SPINR(b)::S(A),XP(a)
- S(e);OGATE,P_SPINS(e)::R1(J)
- Refutation
- S(c);P_SPINS(c)
- Try
- B(G);CHECK
- Vars
- Q(g);N_PINP(I),P_SPINQ(g)::B(K)+P(I)
- R(b);P_SPINR(b)::S(A),XP(a)
- S(e);OGATE,P_SPINS(e)::R1(J)
- Refutation
- S(c);P_SPINS(c)
- Try
- B(G);CHECK
- Vars
- Q(g);N_PINP(I),P_SPINQ(g)::B(K)+P(I)
- R(b);P_SPINR(b)::S(A),XP(a)
- S(c);OGATE,P_SPINS(c)::R1(D)
- Refutation
- S(e);P_SPINS(e)
- Try
- B(G);CHECK
- Vars
- Q(g);N_PINP(I),P_SPINQ(g)::B(K)+P(I)
- R(b);P_SPINR(b)::S(A),XP(a)
- S(c);OGATE,P_SPINS(c)::R1(D)
- Refutation
- S(e);P_SPINS(e)
- Try
- B(G);CHECK
- Vars
- R(b);P_SPINR(b)::S(A),XP(a)
- S(c);OGATE,P_SPINS(c)::R1(D)
- S(e);OGATE,P_SPINS(e)::R1(J)
- Refutation
- Q(g);N_PINP(I),P_SPINQ(g)
- Try
- R(D);XS(c)
- Threat
- R1(D)
- Vars
- Q(g);CHECK,OGATE,P_SPINQ(g),XP(I)::B(K),XQ(g)
- R(b);N_GUARD::S(A),XP(a)
- S(e);OGATE::R1(J)
- Refutation
- R(b);
- Try
- Actual
- B(G);CHECK
- Vars
- Q(g);N_PINP(I),P_SPINQ(g)::B(K)+P(I)
- R(b);P_SPINR(b)::S(A),XP(a)
- S(c);OGATE,P_SPINS(c)::R1(D)
- S(e);OGATE,P_SPINS(e)::R1(J)
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).