MESON Chess Problem Database
Problem Display
PID: 75069 (8/8/6Q1/1R4N1/6pk/2K4N/8/8 w - - 0 1)
Chepizhni, Viktor Ivanovich
4th HM., Schach-WW, 1994
#2
5 + 2
| 6167 | Viktor Chepizhny | 2007 |
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...gxh3
- Tries
- 1.Kb2?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Kc2?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Kd2?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Kb3?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Kd3?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Sg1?
- 1...g3
- 2.S5f3#
- 2.Rb4#
- 1...Kg3!
- 1...g3
- 1.Sf2?
- 1...g3
- 2.Sf3#
- 2.Rb4#
- 2.Qh7#
- 2.Qh6#
- 1...Kg3!
- 1...g3
- 1.Sf4?
- 1...g3
- 2.Sf3#
- 2.Qh5#
- 1...Kg3!
- 1...g3
- 1.Se4?
- threat
- 2.Rh5#
- 2.Qh5#
- 2.Qh7#
- 2.Qh6#
- 1...gxh3
- 2.Rh5#
- 2.Qh5#
- 2.Qg3#
- 2.Qg5#
- 1...g3
- 2.Rh5#
- 2.Qh5#
- 2.Qxg3#
- 1...Kxh3!
- threat
- 1.Rb1?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Rb2?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Rb3?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Ra5?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Ra4#
- 1...Kg3!
- 1...gxh3
- 1.Rc5?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rc4#
- 1...Kg3!
- 1...gxh3
- 1.Rd5?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rd4#
- 1...Kg3!
- 1...gxh3
- 1.Re5?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Re4#
- 1...Kg3!
- 1...gxh3
- 1.Rf5?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rf4#
- 1...Kg3!
- 1...gxh3
- 1.Rb6?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Rb7?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Rb8?
- 1...gxh3
- 2.Sf3#
- 1...g3
- 2.Rb4#
- 1...Kg3!
- 1...gxh3
- 1.Qd3?
- 1...Kh5
- 2.Qh7#
- 1...gxh3
- 2.Qxh3#
- 1...g3!
- 1...Kh5
- 1.Qe4?
- 1...Kh5
- 2.Qh7#
- 1...Kg3!
- 1...Kh5
- 1.Qf7?
- 1...Kg3
- 2.Qf2#
- 1...g3
- 2.Rb4#
- 1...gxh3!
- 1...Kg3
- 1.Qe6?
- 1...Kh5
- 2.Sf3#
- 1...gxh3
- 2.Qxh3#
- 1...g3
- 2.Sf3#
- 1...Kg3!
- 1...Kh5
- 1.Kb2?
- Keys
- 1.Qf5!
- 1...Kg3
- 2.Qf2#
- 1...Kh5
- 2.Qh7#
- 1...gxh3
- 2.Qxh3#
- 1...g3
- 2.Sf3#
- 1...Kg3
- 1.Qf5!
This anticipates 162199(2015/II)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- K(A);P-FLIGHT
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- K(A);S_FLIGHT
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- K(A);P-FLIGHT
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- K(A);P-FLIGHT
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- S(B);
- Refutation
- K(b);S_FLIGHT
- Try
- S(B);
- Refutation
- K(b);S_FLIGHT
- Try
- S(B);
- Refutation
- K(b);S_FLIGHT
- Try
- S(D);
- Threat
- DUALS(4)
- Refutation
- K(b);P-FLIGHT,XS(B)
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- R(C);
- Vars
- P(a);N_GUARD,SBLOCK,XS(B)::S(D)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);
- Vars
- K(b);P-FLIGHT::QAR2(E)
- P(a);OGATE,XS(B)::QAR1(E),XP(a)
- Refutation
- P(a);
- Try
- Q(E);P_PINP(a)
- Vars
- K(b);N_SPINP(a),P-FLIGHT::QAR2(E)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- Q(E);
- Vars
- K(b);S_FLIGHT::QAB1(E)
- P(a);OGATEB,SBLOCK::R(C)
- Refutation
- P(a);XS(B)
- Try
- Q(E);
- Vars
- K(b);P-FLIGHT::R(C)+S(D)
- P(a);OGATE,XS(B)::QAR1(E),XP(a)
- P(a);N_GUARD,SBLOCK::S(D)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- Q(E);
- Vars
- K(b);S_FLIGHT::QAB1(E)
- K(b);P-FLIGHT::QAR2(E)
- P(a);OGATE,XS(B)::QAR1(E),XP(a)
- P(a);N_GUARD,SBLOCK::S(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).