MESON Chess Problem Database
Problem Display
PID: 87478 (8/8/8/6Q1/4P2r/4Nk2/1p1R4/bK4B1 w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Chernyavsky, Mykola Vasilovich
Problemista, 1972
#2
6 + 4
| 5454 | Near Snap | 2009 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Qf5#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rxe4
- 2.Rf2#
- 1...Rf4
- 2.Qg2#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Rh6
- 2.Qg4#
- 1...Rh7
- 2.Qg4#
- 1...Rh8
- 2.Qg4#
- 1...Kxe4
- Tries
- 1.Sd5?
- threat
- 2.Qg2#
- 1...Rg4
- 2.Qe3#
- 1...Rh2
- 2.Qf4#
- 1...Kxe4!
- threat
- 1.Bf2?
- 1...Kxe4
- 2.Qf5#
- 1...Rxe4
- 2.Qg3#
- 1...Rh2
- 2.Qg4#
- 2.Qf5#
- 1...Rh3
- 2.Qg4#
- 2.Qf5#
- 1...Rf4
- 2.Qg2#
- 1...Rg4
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Rh6
- 2.Qg4#
- 2.Qf5#
- 1...Rh7
- 2.Qg4#
- 2.Qf5#
- 1...Rh8
- 2.Qg4#
- 2.Qf5#
- 1...Rh1+!
- 1...Kxe4
- 1.Rd1?
- 1...Ke2
- 2.Qg2#
- 1...Kxe4
- 2.Qf5#
- 1...Rg4
- 2.Qxg4#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Qg2#
- 1...Rh5
- 2.Qg4#
- 1...Rh6
- 2.Qg4#
- 1...Rh7
- 2.Qg4#
- 1...Rh8
- 2.Qg4#
- 1...Rxe4!
- 1...Ke2
- 1.Rc2?
- 1...Rxe4
- 2.Rf2#
- 1...Rg4
- 2.Qxg4#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Qg2#
- 1...Rh5
- 2.Qg4#
- 1...Rh6
- 2.Qg4#
- 1...Rh7
- 2.Qg4#
- 1...Rh8
- 2.Qg4#
- 1...Kxe4!
- 1...Rxe4
- 1.Rh2?
- 1...Rxh2
- 2.Qg4#
- 1...Rxe4
- 2.Rf2#
- 1...Rg4
- 2.Qxg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Qg2#
- 1...Rh5
- 2.Qg4#
- 1...Rh6
- 2.Qg4#
- 1...Rh7
- 2.Qg4#
- 1...Rh8
- 2.Qg4#
- 1...Kxe4!
- 1...Rxh2
- 1.Qf5+?
- 1...Kg3
- 2.Sf1#
- 2.Rg2#
- 1...Rf4!
- 1...Kg3
- 1.Sd5?
- Keys
- 1.Sg2!
- 1...Kxe4
- 2.Qd5#
- 1...Rxe4
- 2.Rf2#
- 1...Rg4
- 2.Qe3#
- 1...Rh1
- 2.Qf4#
- 1...Rh2
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rh5
- 2.Qf4#
- 1...Rh6
- 2.Qf4#
- 1...Rh7
- 2.Qf4#
- 1...Rh8
- 2.Qf4#
- 1...Kxe4
- 1.Sg2!
Anticipated by 84451(1922)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(c);S_FLIGHT,XP(E)::QAB1(F)
- R(d);N_GUARD,P_PINB(B)::QAB1(F)
- R(d);N_GUARD::QAB1(F)
- R(d);SBLOCK,XP(E)::R1(C)
- R(d);SBLOCK::QAB1(F)
- R(d);N_GUARD::QAB1(F),XR(d)
- Tries
- Try
- S(D);
- Threat
- QAB1(F)
- Vars
- R(d);SBLOCK::QAR1(F)
- R(d);N_GUARD::QAR1(F)
- Refutation
- K(c);S_FLIGHT,XP(E)
- Try
- B(B);
- Vars
- K(c);S_FLIGHT,XP(E)::QAB1(F)
- R(d);SBLOCK,XP(E)::QAR1(F)
- R(d);SBLOCK::QAB1(F)
- R(d);N_GUARD::QAB1(F),XR(d)
- R(d);N_GUARD::QAB1(F)
- Refutation
- R(d);CHECK
- Try
- R(C);
- Vars
- K(c);S_FLIGHT::QAR2(F)
- K(c);S_FLIGHT,XP(E)::QAB1(F)
- R(d);N_GUARD::QAB1(F),XR(d)
- R(d);N_GUARD::QAB1(F)
- R(d);SBLOCK::QAB1(F)
- Refutation
- R(d);XP(E)
- Try
- R(C);
- Vars
- R(d);SBLOCK,XP(E)::R1(C)
- R(d);N_GUARD::QAB1(F),XR(d)
- R(d);N_GUARD,P_PINB(B)::QAB1(F)
- R(d);N_GUARD::QAB1(F)
- R(d);SBLOCK::QAB1(F)
- Refutation
- K(c);S_FLIGHT,XP(E)
- Try
- R(C);
- Vars
- R(d);N_GUARD,XR(C)::QAB1(F)
- R(d);SBLOCK,XP(E)::R1(C)
- R(d);N_GUARD::QAB1(F),XR(d)
- R(d);N_GUARD::QAB1(F)
- R(d);SBLOCK::QAB1(F)
- Refutation
- K(c);S_FLIGHT,XP(E)
- Try
- Q(F);CHECK
- Refutation
- R(d);P_SPINR(d)
- Try
- Actual
- S(D);
- Vars
- K(c);OGATEB,S_FLIGHT,XP(E)::QAB1(F)
- R(d);SBLOCK,XP(E)::R1(C)
- R(d);SBLOCK::QAR1(F)
- R(d);N_GUARD,P_PINB(B)::QAR1(F)
- R(d);N_GUARD::QAR1(F)
- R(d);N_GUARD::QAR1(F),XR(d)
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).