MESON Chess Problem Database
Problem Display
PID: 107641 (b5N1/2R2P1K/4k1B1/3R4/NqP4n/8/5Q1B/4rr2 w - - 0 1)
Bakcsi, Gyorgy
Due Alfieri, 1978-1979
#2
10 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Sc5#
- 2.Re7#
- 2.f8S#
- 1...Qc3
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qa5
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qc5
- 2.Sxc5#
- 1...Qd6
- 2.Rxd6#
- 1...Qe7
- 2.Rxe7#
- 1...Qb1
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qb2
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qb3
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qxa4
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qxc4
- 2.Rd6#
- 1...Qb5
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qb6
- 2.Re7#
- 2.f8S#
- 1...Qb7
- 2.Sc5#
- 2.Rd6#
- 2.f8S#
- 1...Qb8
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 1...Ra1
- 2.Qe3#
- 2.Qe2#
- 1...Rb1
- 2.Qe3#
- 2.Qe2#
- 1...Rc1
- 2.Qe3#
- 2.Qe2#
- 1...Rd1
- 2.Qe3#
- 2.Qe2#
- 1...Re2
- 2.Qxe2#
- 1...Re3
- 2.Qxe3#
- 1...Rg1
- 2.Qf6#
- 1...Rh1
- 2.Qf6#
- 1...Sg2
- 2.Bf5#
- 1...Sf3
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Qd2
- Tries
- 1.Re5+?
- 1...Kd6
- 2.Rxe1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 1...Rxe5!
- 1...Kd6
- 1.Rf5?
- threat
- 2.Rf6#
- 1...Qxc4
- 2.Re7#
- 2.f8S#
- 1...Sxf5
- 2.Bxf5#
- 1...Qc3
- 2.Sc5#
- 2.Re7#
- 2.f8S#
- 1...Qe7
- 2.Rxe7#
- 1...Qb2
- 2.Sc5#
- 2.Re7#
- 2.f8S#
- 1...Rxf2!
- threat
- 1.Rcc5?
- threat
- 2.Rd6#
- 2.f8S#
- 1...Qxc5
- 2.Sxc5#
- 1...Rxf2
- 2.Rd6#
- 1...Bxd5
- 2.f8S#
- 1...Sxg6
- 2.Rd6#
- 1...Qd2
- 2.f8S#
- 1...Qb6
- 2.f8S#
- 1...Qb7
- 2.Rd6#
- 1...Rd1
- 2.Qe3#
- 2.Qe2#
- 2.f8S#
- 1...Re5
- 2.f8S#
- 1...Sf5
- 2.f8S#
- 1...Qb8!
- threat
- 1.Rc6+?
- 1...Qd6
- 2.Sc5#
- 2.Rdxd6#
- 2.Rcxd6#
- 2.f8S#
- 1...Bxc6!
- 1...Qd6
- 1.Qxe1+?
- 1...Qxe1
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 1...Rxe1!
- 1...Qxe1
- 1.Qb6+?
- 1...Qd6
- 2.Sc5#
- 2.Rxd6#
- 2.Re7#
- 2.Qxd6#
- 1...Qxb6
- 2.Re7#
- 1...Bc6!
- 1...Qd6
- 1.Qxf1?
- threat
- 2.Qf6#
- 1...Qxc4
- 2.Rd6#
- 1...Qc3
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Qe7
- 2.Rxe7#
- 2.Qxe1#
- 1...Qb2
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.f8S#
- 1...Sf3
- 2.Bf5#
- 2.Qh3#
- 1...Sf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Rxf1!
- threat
- 1.f8Q?
- threat
- 2.Bf7#
- 2.Q8f6#
- 2.Q8f7#
- 2.Qc8#
- 1...Qe7+
- 2.Rxe7#
- 2.Qxe7#
- 1...Qxa4
- 2.Bf7#
- 2.Rd6#
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f6#
- 2.Q8f7#
- 1...Qxc4
- 2.Bf7#
- 2.Rd6#
- 2.Qd6#
- 2.Q8f7#
- 1...Rxf2
- 2.Qc8#
- 1...Sxg6
- 2.Q8f5#
- 2.Q8f6#
- 2.Q8f7#
- 2.Qc8#
- 1...Qc3
- 2.Sc5#
- 2.Bf7#
- 2.Rd6#
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f7#
- 2.Qc8#
- 2.Qe8#
- 1...Qd6
- 2.Bf7#
- 2.Rxd6#
- 2.Qxd6#
- 2.Q8f6#
- 2.Q8f7#
- 1...Qb1
- 2.Sc5#
- 2.Rd6#
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f6#
- 2.Q8f7#
- 2.Qc8#
- 2.Qe8#
- 1...Qb2
- 2.Sc5#
- 2.Bf7#
- 2.Rd6#
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f7#
- 2.Qc8#
- 2.Qe8#
- 1...Qb5
- 2.Bf7#
- 2.Rd6#
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f6#
- 2.Q8f7#
- 1...Qb7
- 2.Sc5#
- 2.Bf7#
- 2.Rd6#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f6#
- 2.Q8f7#
- 2.Qe8#
- 1...Qb8
- 2.Sc5#
- 2.Bf7#
- 2.Rd6#
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 2.Q8f6#
- 2.Q8f7#
- 1...Bc6
- 2.Bf7#
- 2.Q8f6#
- 2.Q8f7#
- 1...Bb7
- 2.Bf7#
- 2.Q8f6#
- 2.Q8f7#
- 1...Qxf8!
- threat
- 1.Re5+?
- Keys
- 1.Qc5!
- threat
- 2.Rd6#
- 2.Re7#
- 1...Rxf7+
- 2.Bxf7#
- 1...Qxc5
- 2.Sxc5#
- 1...Bxd5
- 2.Re7#
- 2.Qxd5#
- 2.cxd5#
- 1...Sxg6
- 2.Rd6#
- 1...Qd2
- 2.Re7#
- 2.Qd6#
- 2.Qe7#
- 1...Qb6
- 2.Re7#
- 2.Qe7#
- 1...Qb7
- 2.Rd6#
- 2.Qd6#
- 2.Qe7#
- 1...Rd1
- 2.Re5#
- 2.Re7#
- 2.Qe3#
- 1...Sf5
- 2.f8S#
- threat
- 1.Qc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(c);N_GUARD::S(C),XQ(c)
- Q(c);N_GUARD::R1(E),XQ(c)
- Q(c);N_GUARD,P_PINP(H)::R1(G),XQ(c)
- Q(c);N_GUARD,XP(D)::R1(E)
- R(a);N_GUARD::QAR(A),XR(a)
- R(b);N_GUARD::QAR1(A)
- S(d);N_GUARD::B(F)
- S(d);N_GUARD::B(F),XS(d)
- Tries
- Try
- R(E);CHECK
- Refutation
- R(a);XR(E)
- Try
- R(E);
- Threat
- R1(E)
- Vars
- S(d);OGATE,XR(E)::B(F),XS(d)
- Q(c);N_GUARD,P_PINP(H)::R1(G),XQ(c)
- Refutation
- R(b);XQ(A)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(c);XR(G)::S(C),XQ(c)
- R(b);XQ(A)::R1(E)
- B(f);XR(E)::P=S
- S(d);XB(F)::R1(E)
- Q(c);::P=S
- Q(c);P_PINP(H)::R1(E)
- R(a);::P=S
- S(d);::P=S
- Refutation
- Q(c);
- Try
- R(G);CHECK
- Refutation
- B(f);XR(G)
- Try
- Q(A);CHECK,XR(a)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- Q(c);XQ(A)::R1(G)
- Refutation
- B(f);P_SPINB(f)
- Try
- Q(A);XR(b)
- Threat
- QAR1(A)
- Vars
- Q(c);N_GUARD,XP(D)::R1(E)
- Refutation
- R(a);XQ(A)
- Try
- P(H);
- Threat
- DUALS(4)
- Vars
- R(b);XQ(A)::QAB(H)
- Refutation
- Q(c);XQ(H)
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATE,XP(H)::B(F),XR(b)
- Q(c);XQ(A)::S(C),XQ(c)
- S(d);XB(F)::R1(E)
- S(d);S_CUTR(b)::P=S
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).