MESON Chess Problem Database
Problem Display
PID: 63530 (2R3KB/8/3pp1QN/2bk3P/Pp2p3/1N1rp3/P1n1B3/2R5 w - - 0 1)
Archakov, Vladimir Mikhailovich
Shakhmaty v SSSR, 1975
#2
11 + 9
| 3771 | FIDE Album (1974-1976) | 1980 |
| 3713 | Snap | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Kc4
- 2.Qxe4#
- 1...e5
- 2.Qf7#
- 1...Kc4
- Tries
- 1.Kf7?
- threat
- 2.Qxe6#
- 1...Kc4
- 2.Qxe4#
- 1...e5
- 2.Qe6#
- 1...Sd4!
- threat
- 1.Sxc5?
- threat
- 2.Qxe4#
- 2.Qxe6#
- 1...Kc4
- 2.Qxe4#
- 1...e5
- 2.Qxe4#
- 1...Rd4
- 2.Qxe6#
- 1...Sd4
- 2.Qxe4#
- 1...dxc5!
- threat
- 1.Bxd3?
- threat
- 2.Qxe4#
- 1...e5
- 2.Qf7#
- 1...exd3!
- threat
- 1.Qf5+?
- 1...Kc4
- 2.Sa5#
- 2.Rxc2#
- 2.Qxe4#
- 1...e5
- 2.Qf7#
- 1...exf5!
- 1...Kc4
- 1.Qh7?
- 1...Kc4
- 2.Qxe4#
- 1...Rxb3
- 2.Qb7#
- 1...e5
- 2.Qf7#
- 1...Rd1
- 2.Qb7#
- 1...Rd2
- 2.Qb7#
- 1...Rc3
- 2.Qb7#
- 1...Rd4
- 2.Qb7#
- 1...Bd4
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Ba7
- 2.Qb7#
- 1...Sa1
- 2.Qb7#
- 1...Se1
- 2.Qb7#
- 1...Sa3
- 2.Qb7#
- 1...Sd4!
- 1...Kc4
- 1.Qg5+?
- 1...Kc4
- 2.Sa5#
- 2.Rxc2#
- 1...e5!
- 1...Kc4
- 1.Qg7?
- 1...Kc4
- 2.Qd4#
- 1...Rxb3
- 2.Qb7#
- 1...e5
- 2.Qf7#
- 1...Rd1
- 2.Qb7#
- 1...Rd2
- 2.Qb7#
- 1...Rc3
- 2.Qb7#
- 1...Rd4
- 2.Qb7#
- 1...Bd4
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Ba7
- 2.Qb7#
- 1...Sa1
- 2.Qb7#
- 1...Se1
- 2.Qb7#
- 1...Sa3
- 2.Qb7#
- 1...Sd4!
- 1...Kc4
- 1.Kf7?
- Keys
- 1.Sf5!
- 1...Kc4
- 2.Sxe3#
- 1...Rxb3
- 2.Se7#
- 1...exf5
- 2.Qf7#
- 1...Rd1
- 2.Se7#
- 1...Rd2
- 2.Se7#
- 1...Rc3
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Bd4
- 2.Se7#
- 1...Bb6
- 2.Se7#
- 1...Ba7
- 2.Se7#
- 1...Sa1
- 2.Se7#
- 1...Se1
- 2.Se7#
- 1...Sa3
- 2.Se7#
- 1...Sd4
- 2.Se7#
- 1...e5
- 2.Qf7#
- 1...Kc4
- 1.Sf5!
Anticipated by 61057(1972)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- K(g);P_SPINB(f),P_SPINR(b),P_SPINS(a),S_FLIGHT::QAR2(G),XP(e)
- P(i);OGATEB::QAB(G)
- Tries
- Try
- K(J);S_FLIGHT
- Threat
- QAB1(G),XP(i)
- Vars
- K(g);P_SPINB(f),P_SPINR(b),P_SPINS(a),S_FLIGHT::QAR2(G),XP(e)
- P(i);::QAB1(G)
- Refutation
- S(a);
- Try
- S(D);XB(f)
- Threat
- DUALS(2)
- Vars
- K(g);P_SPINR(b),P_SPINS(a),S_FLIGHT::QAR2(G),XP(e)
- P(i);::QAB1(G),XP(e)
- R(b);::QAB1(G),XP(i)
- S(a);::QAB1(G),XP(e)
- Refutation
- P(h);XS(D)
- Try
- B(C);XR(b)
- Threat
- QAB1(G),XP(e)
- Vars
- P(i);OGATEB::QAB(G)
- Refutation
- P(e);XB(C)
- Try
- Q(G);CHECK
- Vars
- P(i);OGATEB,P_SPINP(i)::QAB(G)
- Refutation
- P(i);XQ(G)
- Try
- Q(G);
- Vars
- K(g);P_SPINB(f),P_SPINR(b),P_SPINS(a),S_FLIGHT::QAR2(G),XP(e)
- R(b);XS(D)::QAB(G)
- P(i);OGATEB::QAB(G)
- R(b);::QAB(G)
- B(f);::QAB(G)
- S(a);::QAB(G)
- Refutation
- S(a);
- Try
- Q(G);CHECK
- Refutation
- P(i);P_SPINP(i)
- Try
- Q(G);
- Vars
- K(g);P_SPINB(f),P_SPINR(b),P_SPINS(a),S_FLIGHT::QAR1(G)
- R(b);XS(D)::QAB(G)
- P(i);OGATEB::QAB(G)
- R(b);::QAB(G)
- B(f);::QAB(G)
- S(a);::QAB(G)
- Refutation
- S(a);
- Try
- Actual
- S(H);
- Vars
- K(g);P_SPINB(f),P_SPINR(b),P_SPINS(a),S_FLIGHT::S(H),XP(c)
- R(b);XS(D)::S(H)
- P(i);OGATEB,XS(H)::QAB(G)
- R(b);::S(H)
- B(f);::S(H)
- S(a);::S(H)
- P(i);OGATEB::QAB(G)
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).