MESON Chess Problem Database
Problem Display
PID: 106017 (2B4q/4Pp2/RB3pRr/3kP2p/3PN2K/1Pb5/n3QP2/8 w - - 0 1)
Erokhin, Vladimir Alekseevich
Source?, 1978
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kc6
- 2.Qc4#
- 1...fxe5
- 2.Bb7#
- 1...f5
- 2.Bb7#
- 1...Kc6
- Tries
- 1.Sd2?
- threat
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qc4#
- 1...Bxd2
- 2.Qf3#
- 1...Bxd4
- 2.Qe4#
- 1...fxe5
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Qe8
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Bb4
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...f5
- 2.Bb7#
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 1...Qxc8!
- threat
- 1.Sxc3+?
- 1...Kc6
- 2.Ba5#
- 2.Bd8#
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 2.d5#
- 1...Sxc3!
- 1...Kc6
- 1.Sg3?
- threat
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qc4#
- 1...Bxd4
- 2.Qe4#
- 1...fxe5
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Qe8
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Bb4
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...f5
- 2.Bb7#
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 1...Qxc8!
- threat
- 1.Sg5?
- threat
- 2.Bb7#
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qc4#
- 1...Qxc8
- 2.Qf3#
- 2.Qe4#
- 1...Bxd4
- 2.Bb7#
- 2.Qe4#
- 1...fxe5
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Qe8
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Bb4
- 2.Bb7#
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Sb4
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...f5
- 2.Bb7#
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 1...fxg5+!
- threat
- 1.Sd6?
- threat
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Bxd4
- 2.Qe4#
- 1...fxe5
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Qe8
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Bb4
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...f5
- 2.Bb7#
- 2.Qf3#
- 2.Qc4#
- 2.Qb5#
- 1...Qxc8!
- threat
- 1.Sxf6+?
- 1...Kc6
- 2.Ba5#
- 2.Bd8#
- 2.Qc4#
- 2.d5#
- 1...Qxf6+!
- 1...Kc6
- 1.Bc5?
- threat
- 2.Bb7#
- 2.Rd6#
- 1...Qxc8
- 2.Sxf6#
- 2.Rd6#
- 1...Qd8
- 2.Sxf6#
- 2.Bb7#
- 2.exd8Q#
- 2.exd8R#
- 1...Qe8
- 2.Sxf6#
- 2.Rd6#
- 1...Sb4
- 2.Sxc3#
- 2.Rd6#
- 1...Bxd4!
- threat
- 1.Ba7?
- threat
- 2.Bb7#
- 2.Rd6#
- 1...Qxc8
- 2.Sxf6#
- 2.Rd6#
- 1...Qd8
- 2.Sxf6#
- 2.Bb7#
- 2.exd8Q#
- 2.exd8R#
- 1...Qe8
- 2.Sxf6#
- 2.Rd6#
- 1...Bb4
- 2.Bb7#
- 1...Sb4
- 2.Sxc3#
- 2.Rd6#
- 1...Bxd4!
- threat
- 1.Bc7?
- threat
- 2.Rd6#
- 1...Kxd4
- 2.Qc4#
- 1...Bxd4
- 2.Bb7#
- 1...Qd8
- 2.exd8Q#
- 2.exd8R#
- 1...Bb4!
- threat
- 1.Ra5+?
- 1...Kc6
- 2.Qb5#
- 1...Bxa5!
- 1...Kc6
- 1.Qf3?
- threat
- 2.Sd2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...Kc6
- 2.Sxc3#
- 2.Sd6#
- 1...Qxc8
- 2.Sg5#
- 1...fxe5
- 2.Sxc3#
- 2.Bb7#
- 1...Ba1
- 2.Sd2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...Be1
- 2.Sd2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...Bb2
- 2.Sd2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...Bd2
- 2.Sxd2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...Bb4
- 2.Sd2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...Ba5
- 2.Sd2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxf6#
- 1...f5
- 2.Sd2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Bb7#
- 1...Bxd4!
- threat
- 1.e8Q?
- threat
- 2.Bb7#
- 2.Q8b5#
- 2.Qd7#
- 1...Bxd4
- 2.Bb7#
- 1...Qf8
- 2.Sxf6#
- 2.Bb7#
- 1...Bb4
- 2.Bb7#
- 1...Sb4
- 2.Sxc3#
- 2.Ra5#
- 2.Q8b5#
- 2.Qd7#
- 1...Qxe8!
- threat
- 1.Sd2?
- Keys
- 1.Sc5!
- threat
- 2.Qe4#
- 1...Kxd4
- 2.Qe4#
- 1...Kc6
- 2.Bb7#
- 1...f5
- 2.Qc4#
- threat
- 1.Sc5!
This is a version
(v) by Vasilenko.
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(c);P_SPINP(e),S_FLIGHT::QAR2(A)
- P(e);XP(G)::B(L)
- P(e);::B(L)
- Tries
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- K(c);P_SPINP(e),S_FLIGHT::QAR2(A)
- B(b);XS(E)::QAB(A)
- B(b);XP(D)::QAB1(A)
- Refutation
- Q(h);XB(L)
- Try
- S(E);CHECK,XB(b)
- Refutation
- S(a);XS(E)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- K(c);P_SPINP(e),S_FLIGHT::QAR2(A)
- B(b);XP(D)::QAB1(A)
- Refutation
- Q(h);XB(L)
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- K(c);P_SPINP(e),S_FLIGHT::QAR2(A)
- Refutation
- P(e);CHECK,XS(E)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- B(b);XP(D)::QAB1(A)
- Refutation
- Q(h);XB(L)
- Try
- S(E);CHECK,XP(e)
- Refutation
- Q(h);CHECK,XS(E)
- Try
- B(I);
- Threat
- DUALS(2)
- Refutation
- B(b);XP(D)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- B(b);::B(L)
- Refutation
- B(b);XP(D)
- Try
- B(I);
- Threat
- R1(H)
- Vars
- K(c);P-FLIGHT,XP(D)::QAR1(A)
- B(b);SBLOCK,XP(D)::B(L)
- Q(h);OGATE::PXQ(h)=Q
- Refutation
- B(b);
- Try
- R(H);CHECK
- Vars
- K(c);P_SPINP(e),S_FLIGHT::QAB1(A)
- Refutation
- B(b);XR(H)
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- Q(h);XB(L)::QAB(A)+S(E)
- Refutation
- B(b);XP(D)
- Try
- P(K);
- Threat
- DUALS(3)
- Vars
- B(b);XP(D)::B(L)
- B(b);::B(L)
- Refutation
- Q(h);XQ(K)
- Try
- Actual
- S(E);
- Threat
- QAB1(A)
- Vars
- K(c);P-FLIGHT,XP(D)::QAR1(A)
- K(c);P_SPINP(e),S_FLIGHT::B(L)
- P(e);::QAB1(A)
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).