MESON Chess Problem Database
Problem Display
PID: 93410 (2B2n2/8/RB3pRr/p2kP2p/3PN2b/1P6/2p1Q3/q2NnK2 w - - 0 1)
Erokhin, Vladimir Alekseevich
Shakhmaty v SSSR, 1978
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kc6
- 2.Qc4#
- 1...Se6
- 2.Bb7#
- 1...fxe5
- 2.Bb7#
- 1...f5
- 2.Bb7#
- 1...Kc6
- Tries
- 1.Sdc3+?
- 1...Kc6
- 2.Bxa5#
- 2.Bd8#
- 2.Qc4#
- 2.Qb5#
- 2.d5#
- 1...Qxc3!
- 1...Kc6
- 1.Se3+?
- 1...Kc6
- 2.Bxa5#
- 2.Bd8#
- 2.Qc4#
- 2.d5#
- 1...Kxe4!
- 1...Kc6
- 1.Sd2?
- threat
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...c1Q
- 2.Qe4#
- 1...c1R
- 2.Qe4#
- 1...Qc3
- 2.Qe4#
- 1...Qa3
- 2.Qc4#
- 2.Qe4#
- 1...Qa4
- 2.Qe4#
- 1...Sd3
- 2.Qf3#
- 2.Qg2#
- 2.Qe4#
- 1...Se6
- 2.Bb7#
- 2.Qc4#
- 2.Qe4#
- 1...f5
- 2.Se3#
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 1...Qxd4!
- threat
- 1.Sec3+?
- 1...Kc6
- 2.Bxa5#
- 2.Bd8#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 2.d5#
- 1...Qxc3!
- 1...Kc6
- 1.Sg5?
- threat
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qc4#
- 1...Qxd4
- 2.Bb7#
- 1...fxg5
- 2.Bb7#
- 1...c1Q
- 2.Qe4#
- 1...c1R
- 2.Qe4#
- 1...Qc3
- 2.Qe4#
- 1...Qa3
- 2.Bb7#
- 2.Qc4#
- 2.Qe4#
- 1...Qa4
- 2.Qe4#
- 1...Rh7
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Sd3
- 2.Bb7#
- 2.Qf3#
- 2.Qg2#
- 2.Qe4#
- 1...Se6
- 2.Bb7#
- 2.Qc4#
- 2.Qe4#
- 1...Sd7
- 2.Bb7#
- 2.Qc4#
- 2.Qe4#
- 1...f5
- 2.Se3#
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 1...Bxg5!
- threat
- 1.Sd6?
- threat
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Kc6
- 2.Qc4#
- 2.Qb5#
- 2.Qe4#
- 1...Sd7
- 2.Qc4#
- 1...c1Q
- 2.Qe4#
- 1...c1R
- 2.Qe4#
- 1...Qc3
- 2.Qe4#
- 1...Qa3
- 2.Qc4#
- 2.Qe4#
- 1...Qa4
- 2.Qe4#
- 1...Sd3
- 2.Qf3#
- 2.Qg2#
- 2.Qe4#
- 1...Se6
- 2.Bb7#
- 2.Qc4#
- 2.Qe4#
- 1...f5
- 2.Bb7#
- 2.Qc4#
- 2.Qb5#
- 1...Qxd4!
- threat
- 1.Sxf6+?
- 1...Kc6
- 2.Bxa5#
- 2.Bd8#
- 2.Qc4#
- 2.d5#
- 1...Bxf6!
- 1...Kc6
- 1.Bc5?
- threat
- 2.Bb7#
- 2.Rd6#
- 1...Qa4
- 2.Sdc3#
- 2.Sec3#
- 2.Rd6#
- 1...Rh7
- 2.Rd6#
- 1...Qxd4!
- threat
- 1.Ba7?
- threat
- 2.Bb7#
- 2.Rd6#
- 1...c1Q
- 2.Rd6#
- 1...c1R
- 2.Rd6#
- 1...Qc3
- 2.Sdxc3#
- 2.Sexc3#
- 2.Rd6#
- 1...Qa3
- 2.Sdc3#
- 2.Sec3#
- 2.Bb7#
- 1...Qa4
- 2.Sdc3#
- 2.Sec3#
- 2.Rd6#
- 1...Rh7
- 2.Rd6#
- 1...Qxd4!
- threat
- 1.Bc7?
- threat
- 2.Rd6#
- 1...Kxd4
- 2.Qc4#
- 1...Qxd4
- 2.Bb7#
- 1...Qa3!
- threat
- 1.Rxa5+?
- 1...Kc6
- 2.Qb5#
- 1...Qxa5!
- 1...Kc6
- 1.Sdc3+?
- Keys
- 1.Sc5!
- threat
- 2.Qe4#
- 1...Kxd4
- 2.Qe4#
- 1...Kc6
- 2.Bb7#
- 1...Qxd4
- 2.Bb7#
- 1...f5
- 2.Qc4#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- K(f);P_SPINP(h),S_FLIGHT::QAR2(C)
- S(j);SBLOCK::B(K)
- P(h);XP(G)::B(K)
- P(h);::B(K)
- Tries
- Try
- S(A);CHECK
- Refutation
- Q(a);XS(A)
- Try
- S(A);CHECK
- Refutation
- K(f);S_FLIGHT,XS(F)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- K(f);P_SPINP(h),S_FLIGHT::QAR2(C)
- S(j);::QAB1(C)
- P(c);::QAB1(C)
- Q(a);::QAB1(C)
- Refutation
- Q(a);XP(E)
- Try
- S(F);CHECK
- Refutation
- Q(a);XS(F)
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- K(f);P_SPINP(h),S_FLIGHT::QAR2(C)
- Q(a);XP(E)::B(K)
- P(h);XS(F)::B(K)
- P(c);::QAB1(C)
- Q(a);::QAB1(C)
- Refutation
- B(d);XS(F)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- S(j);::QAB1(C)
- P(c);::QAB1(C)
- Q(a);::QAB1(C)
- Refutation
- Q(a);XP(E)
- Try
- S(F);CHECK,XP(h)
- Refutation
- B(d);XS(F)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(i);::R1(H)
- Refutation
- Q(a);XP(E)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- P(c);::R1(H)
- R(i);::R1(H)
- Refutation
- Q(a);XP(E)
- Try
- B(I);
- Threat
- R1(H)
- Vars
- K(f);P-FLIGHT,XP(E)::QAR1(C)
- Q(a);SBLOCK,XP(E)::B(K)
- Refutation
- Q(a);
- Try
- R(H);CHECK,XP(e)
- Vars
- K(f);P_SPINP(h),S_FLIGHT::QAB1(C)
- Refutation
- Q(a);XR(H)
- Try
- Actual
- S(F);
- Threat
- QAB1(C)
- Vars
- K(f);P-FLIGHT,XP(E)::QAR1(C)
- K(f);P_SPINP(h),S_FLIGHT::B(K)
- Q(a);SBLOCK,XP(E)::B(K)
- P(h);::QAB1(C)
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).