MESON Chess Problem Database
Problem Display
PID: 243602 (1Q2B3/3N4/6nR/3k2n1/K7/2R1P3/8/8 w - - 0 1)
Bakay, Bela
Nepszava, 1930
#2
7 + 3
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Qe5#
- 1...Se4
- 2.Bf7#
- 1...Se6
- 2.Sf6#
- 1...Sf4
- 2.Qe5#
- 2.Qb7#
- 2.Qa8#
- 1...Sh4
- 2.Qe5#
- 2.Qb7#
- 2.Qa8#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 2.Qb7#
- 2.Qa8#
- 1...Sh8
- 2.Qe5#
- 2.Qb7#
- 2.Qa8#
- 1...Ke6
- Tries
- 1.Rd3+?
- 1...Kc4
- 2.Qb3#
- 2.Qb5#
- 1...Kc6
- 2.Rd6#
- 2.Qb6#
- 2.Qc8#
- 1...Ke6
- 2.Qe5#
- 1...Ke4!
- 1...Kc4
- 1.Rc5+?
- 1...Ke6
- 2.Re5#
- 2.Qe5#
- 1...Ke4!
- 1...Ke6
- 1.Rh4?
- 1...Sxh4
- 2.Qe5#
- 1...Sf4
- 2.Qe5#
- 1...Sf3
- 2.Bf7#
- 1...Sh3
- 2.Bf7#
- 1...Se4
- 2.Bf7#
- 1...Se6
- 2.Sb6#
- 2.Sf6#
- 1...Sf7
- 2.Bxf7#
- 1...Sh7
- 2.Bf7#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Ke6!
- 1...Sxh4
- 1.Rxg6?
- threat
- 2.Qe5#
- 2.Qb7#
- 2.Qa8#
- 1...Sf3
- 2.Qb7#
- 2.Qa8#
- 1...Se6
- 2.Sf6#
- 2.Qe5#
- 1...Sf7
- 2.Qb7#
- 2.Qa8#
- 1...Ke4!
- threat
- 1.Qf4?
- 1...Ke6
- 2.Qe5#
- 1...Sf3
- 2.Bf7#
- 1...Sh3
- 2.Bf7#
- 1...Se4
- 2.Bf7#
- 1...Se6
- 2.Sb6#
- 2.Sf6#
- 1...Sf7
- 2.Bxf7#
- 1...Sh7
- 2.Bf7#
- 1...Sh4
- 2.Sb6#
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 2.Qc4#
- 2.Qd4#
- 1...Se5
- 2.Sb6#
- 2.Rc5#
- 2.Qxe5#
- 2.Qd4#
- 1...Se7
- 2.Sb6#
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 2.Qc4#
- 2.Qd4#
- 1...Sf8
- 2.Sb6#
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 2.Qc4#
- 2.Qd4#
- 2.Qf5#
- 1...Sh8
- 2.Sb6#
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 2.Qc4#
- 2.Qd4#
- 2.Qf5#
- 1...Sxf4!
- 1...Ke6
- 1.Qc7?
- threat
- 2.Qc6#
- 1...Ke6
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 2.Qc4#
- 1...Ke4!
- threat
- 1.Qb4?
- 1...Sf3
- 2.Bf7#
- 1...Sh3
- 2.Bf7#
- 1...Se4
- 2.Bf7#
- 1...Se6
- 2.e4#
- 1...Sf7
- 2.Bxf7#
- 1...Sh7
- 2.Bf7#
- 1...Sf4
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 2.Qb7#
- 1...Sh4
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 2.Qb7#
- 1...Se5
- 2.Sb6#
- 2.Rc5#
- 2.Rd6#
- 2.Qd4#
- 1...Se7
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 1...Sf8
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 2.Qb7#
- 1...Sh8
- 2.Rd3#
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 2.Qd4#
- 2.Qb7#
- 1...Ke6!
- 1...Sf3
- 1.Qb5+?
- 1...Kd6
- 2.Qe5#
- 1...Ke6
- 2.Qe5#
- 1...Ke4!
- 1...Kd6
- 1.Qb6?
- threat
- 2.Qc6#
- 1...Se5
- 2.Sf6#
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Ke4!
- threat
- 1.Rd3+?
- Keys
- 1.Rc4!
- 1...Kxc4
- 2.Qb3#
- 1...Ke6
- 2.Qe5#
- 1...Sf3
- 2.Bf7#
- 1...Sh3
- 2.Bf7#
- 1...Se4
- 2.Bf7#
- 1...Se6
- 2.Sb6#
- 1...Sf7
- 2.Bxf7#
- 1...Sh7
- 2.Bf7#
- 1...Sf4
- 2.Sb6#
- 2.Rd4#
- 2.Qb5#
- 1...Sh4
- 2.Sb6#
- 2.Rd4#
- 2.Qb5#
- 1...Se5
- 2.Sb6#
- 2.Rd4#
- 2.Qb5#
- 1...Se7
- 2.Sb6#
- 2.Rd4#
- 2.Qb5#
- 1...Sf8
- 2.Sb6#
- 2.Rd4#
- 2.Qb5#
- 1...Sh8
- 2.Sb6#
- 2.Rd4#
- 2.Qb5#
- 1...Kxc4
- 1.Rc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- K(a);P_SPINS(c),S_FLIGHT::QAR1(F)
- S(b);N_GUARD,SBLOCK::B(G)
- S(b);SBLOCK::S(E)
- S(c);N_GUARD::QAR1(F),XS(c)
- S(c);N_GUARD::QAR1(F)
- Tries
- Try
- R(A);CHECK
- Vars
- K(a);P_SPINS(c),S_FLIGHT::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- R(A);CHECK
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Vars
- S(c);N_GUARD,XR(D)::QAR1(F)
- S(c);N_GUARD::QAR1(F)
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- S(c);N_GUARD::QAR1(F),XS(c)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);XS(c)
- Threat
- DUALS(3)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Vars
- K(a);P_SPINS(c),S_FLIGHT::QAR1(F)
- S(b);N_GUARD::B(G)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- S(c);XQ(F)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- K(a);P_SPINS(c),S_FLIGHT::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Vars
- S(b);N_GUARD::B(G)
- S(b);N_GUARD,SBLOCK::P(B)
- S(b);N_GUARD::B(G),XS(b)
- Refutation
- K(a);P_SPINS(c),S_FLIGHT
- Try
- Q(F);CHECK
- Vars
- K(a);OGATE,P-FLIGHT,P_SPINS(c)::QAB1(F)
- K(a);OGATE,P_SPINS(c),S_FLIGHT::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- S(c);::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- R(A);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(A)::QAB1(F)
- K(a);P_SPINS(c),S_FLIGHT::QAR1(F)
- S(b);N_GUARD::B(G)
- S(b);SBLOCK::S(E)
- S(b);N_GUARD::B(G),XS(b)
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).