MESON Chess Problem Database
Problem Display
PID: 225336 (4KB2/2N2R1p/8/2p1kB2/2pN3Q/b5n1/3r1P2/2q1rn1b w - - 0 1)
Kovacik, Jozef
Praca Prvotina, 1957
#2
8 + 11
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sc6#
- 1...Bf3
- 2.Sxf3#
- 1...Bc6+
- 2.Sxc6#
- 1...Se4
- 2.Sc6#
- 1...Sxf5
- 2.Rxf5#
- 1...cxd4
- 2.f4#
- 1...Re4
- Tries
- 1.Bg6?
- threat
- 2.Qf6#
- 2.Qf4#
- 1...Bc6+
- 2.Sxc6#
- 1...Rxd4
- 2.Qf6#
- 2.Qe7#
- 1...hxg6
- 2.Qf4#
- 1...Re4
- 2.Sc6#
- 2.Qf6#
- 1...Be4
- 2.Qf6#
- 1...Se4
- 2.Sc6#
- 1...Rdd1
- 2.Qf6#
- 1...Ra2
- 2.Qf6#
- 1...Rb2
- 2.Qf6#
- 1...Rc2
- 2.Qf6#
- 1...Rde2
- 2.Qf6#
- 1...Rd3
- 2.Qf6#
- 1...Se2
- 2.Rf5#
- 2.Qf6#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Rxf2!
- threat
- 1.Bxh7?
- threat
- 2.Qf6#
- 2.Qf4#
- 1...Bc6+
- 2.Sxc6#
- 1...Rxd4
- 2.Qf6#
- 2.Qe7#
- 1...Re4
- 2.Sc6#
- 2.Qf6#
- 1...Be4
- 2.Qf6#
- 1...Se4
- 2.Sc6#
- 1...Rdd1
- 2.Qf6#
- 1...Ra2
- 2.Qf6#
- 1...Rb2
- 2.Qf6#
- 1...Rc2
- 2.Qf6#
- 1...Rde2
- 2.Qf6#
- 1...Rd3
- 2.Qf6#
- 1...Se2
- 2.Rf5#
- 2.Qf6#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Rxf2!
- threat
- 1.Bxc5?
- threat
- 2.Re7#
- 2.f4#
- 1...Bc6+
- 2.Sxc6#
- 1...Rxf2
- 2.Re7#
- 1...Rxd4
- 2.Qxd4#
- 1...Sxf5
- 2.Rxf5#
- 1...Rdd1
- 2.Re7#
- 1...Re4
- 2.Sc6#
- 2.Re7#
- 1...Ra2
- 2.Re7#
- 1...Rb2
- 2.Re7#
- 1...Rc2
- 2.Re7#
- 1...Rde2
- 2.Re7#
- 1...Rd3
- 2.Re7#
- 1...Bf3
- 2.Sxf3#
- 2.Re7#
- 1...Bd5
- 2.f4#
- 1...Se2
- 2.Re7#
- 1...Sh5
- 2.Re7#
- 1...Bxc5!
- threat
- 1.Qe7+?
- 1...Kf4
- 2.Bh6#
- 1...Kxd4!
- 1...Kf4
- 1.fxg3?
- threat
- 2.Qf6#
- 2.Qf4#
- 1...Bc6+
- 2.Sxc6#
- 1...Rxd4
- 2.Qf6#
- 2.Qe7#
- 1...Re4
- 2.Sc6#
- 2.Qf6#
- 1...Be4
- 2.Qf6#
- 1...Rdd1
- 2.Qf6#
- 1...Ra2
- 2.Qf6#
- 1...Rb2
- 2.Qf6#
- 1...Rc2
- 2.Qf6#
- 1...Rde2
- 2.Qf6#
- 1...Rf2
- 2.Qf6#
- 1...Rg2
- 2.Sf3#
- 2.Sc6#
- 2.Qf6#
- 1...Rh2
- 2.Qf6#
- 1...Rd3
- 2.Qf6#
- 1...Sxg3!
- threat
- 1.f3?
- threat
- 2.Sc6#
- 1...Bxf3
- 2.Sxf3#
- 1...cxd4
- 2.f4#
- 1...Rxd4!
- threat
- 1.Bg6?
- Keys
- 1.Be4!
- threat
- 2.Sc6#
- 1...Kxd4
- 2.Bg7#
- 1...Rxd4
- 2.Qe7#
- 1...Bxe4
- 2.Qf6#
- 1...cxd4
- 2.Qf4#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(b);S_CUTB(d)::S(B)
- B(d);N_GUARD::S(B),XB(d)
- B(d);CHECK,N_GUARD::S(B),XB(d)
- S(g);S_CUTB(d)::S(B)
- S(g);OGATE,XB(D)::R1(F),XS(g)
- P(i);SBLOCK,XS(B)::P(A)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(B),XB(d)
- P(k);XB(D)::QAB1(C)
- B(d);::QAB1(C)
- S(g);S_CUTB(d)::S(B)
- R(e);::QAB1(C)
- S(g);N_GUARD::R1(F),XS(g)
- S(g);N_GUARD::R1(F)
- Refutation
- R(e);XP(A)
- Try
- B(D);XP(k)
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(B),XB(d)
- B(d);::QAB1(C)
- S(g);S_CUTB(d)::S(B)
- R(e);::QAB1(C)
- S(g);N_GUARD::R1(F),XS(g)
- S(g);N_GUARD::R1(F)
- Refutation
- R(e);XP(A)
- Try
- B(H);XP(i)
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(B),XB(d)
- R(e);XP(A)::R(F)
- R(e);OGATE,XS(B)::QAB1(C),XR(e)
- S(g);OGATE,XB(D)::R1(F),XS(g)
- R(e);::R(F)
- B(d);::P(A)
- S(g);::R(F)
- Refutation
- B(f);XB(H)
- Try
- Q(C);CHECK
- Vars
- K(j);P_PINQ(C),S_FLIGHT::B(H)
- Refutation
- K(j);P_PINQ(C),S_FLIGHT,XS(B)
- Try
- P(A);XS(g)
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(B),XB(d)
- B(d);::QAB1(C)
- R(e);::QAB1(C)
- Refutation
- S(c);XP(A)
- Try
- P(A);
- Threat
- S(B)
- Vars
- B(d);XP(A)::S(B),XB(d)
- P(i);SBLOCK,XS(B)::P(A)
- Refutation
- R(e);XS(B)
- Try
- Actual
- B(D);
- Threat
- S(B)
- Vars
- K(j);P_PINB(D),S_FLIGHT,XS(B)::B(H)
- R(e);SBLOCK,XS(B)::QAR2(C)
- B(d);SBLOCK,XB(D)::QAB1(C)
- P(i);SBLOCK,XS(B)::QAB1(C)
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).