MESON Chess Problem Database
Problem Display
PID: 64525 (4R3/8/1p1p4/1Qbkp3/p3rp2/NNp1nB2/p3R3/B1K5 w - - 0 1)
Erokhin, Vladimir Alekseevich
1st Place, Source?, 1980
#2
8 + 11
| 3752 | FIDE Album (1980-1982) | 1988 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Bxe4#
- 1...Sf1
- 2.Bxe4#
- 1...Sc2
- 2.Bxe4#
- 1...Sg2
- 2.Bxe4#
- 1...Sc4
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...Sf5
- 2.Bxe4#
- 1...c2
- 2.Rd2#
- 1...Sd1
- Tries
- 1.Sc2?
- threat
- 2.Sb4#
- 1...Sxc2
- 2.Bxe4#
- 1...axb3!
- threat
- 1.Sc4?
- threat
- 2.Sxb6#
- 1...Sxc4
- 2.Bxe4#
- 1...axb3!
- threat
- 1.Sa5?
- 1...Kd4
- 2.Rd2#
- 1...Sd1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sg2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...c2
- 2.Rd2#
- 2.Qc6#
- 1...bxa5!
- 1...Kd4
- 1.Sxc5?
- threat
- 2.Sb3#
- 2.Se6#
- 1...Kd4
- 2.Se6#
- 2.Rd2#
- 1...dxc5
- 2.Qd7#
- 1...bxc5!
- threat
- 1.Rxe3?
- threat
- 2.Bxe4#
- 2.Rd3#
- 1...axb3
- 2.Rd3#
- 1...fxe3!
- threat
- 1.Re7?
- 1...Sd1
- 2.Bxe4#
- 1...Sf1
- 2.Bxe4#
- 1...Sc2
- 2.Bxe4#
- 1...Sg2
- 2.Bxe4#
- 1...Sc4
- 2.Bxe4#
- 1...Sg4
- 2.Bxe4#
- 1...Sf5
- 2.Bxe4#
- 1...c2
- 2.Rd2#
- 1...axb3!
- 1...Sd1
- 1.Qd3+?
- 1...Bd4
- 2.Bxe4#
- 2.Qxe4#
- 1...Kc6!
- 1...Bd4
- 1.Qxa4?
- threat
- 2.Bxe4#
- 2.Qxe4#
- 2.Qa8#
- 1...Bb4
- 2.Qa8#
- 1...Bd4
- 2.Qa8#
- 1...Sc4
- 2.Bxe4#
- 2.Qa8#
- 1...Bxa3+!
- threat
- 1.Qc4+?
- 1...Sxc4
- 2.Bxe4#
- 1...Kc6!
- 1...Sxc4
- 1.Sc2?
- Keys
- 1.Sd4!
- 1...Kxd4
- 2.Rd2#
- 1...exd4
- 2.Bxe4#
- 1...Sd1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sg2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sg4
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...c2
- 2.Qc6#
- 1...Kxd4
- 1.Sd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(c);::B(F),XR(e)
- P(b);N_GUARD::R(C)
- Tries
- Try
- S(D);
- Threat
- S(D)
- Vars
- S(c);XS(D)::B(F),XR(e)
- Refutation
- P(d);XS(E)
- Try
- S(D);
- Threat
- S(D),XP(j)
- Vars
- S(c);XS(D)::B(F),XR(e)
- Refutation
- P(d);XS(E)
- Try
- S(E);
- Vars
- K(h);N_SPINB(g),N_SPINR(e),P-FLIGHT,P_SPINP(b)::R(C)
- S(c);N_GUARD::QAB1(G)
- S(c);N_GUARD::QAB1(G),XS(c)
- Refutation
- P(j);XS(E)
- Try
- S(E);XB(g)
- Threat
- DUALS(2)
- Vars
- P(k);OGATEB,P_SPINP(k),SBLOCK,XS(E)::QAR2(G)
- Refutation
- P(j);P_SPINP(j),XS(E)
- Try
- R(C);XS(c)
- Threat
- DUALS(2)
- Vars
- P(d);XS(E)::R(C)
- Refutation
- P(f);XR(C)
- Try
- R(H);
- Vars
- S(c);::B(F),XR(e)
- P(b);N_GUARD::R(C)
- Refutation
- P(d);XS(E)
- Try
- Q(G);CHECK,N_PINB(g)
- Refutation
- K(h);S_FLIGHT
- Try
- Q(G);N_PINB(g),XP(d)
- Threat
- DUALS(3)
- Vars
- B(g);::QAB(G)
- Refutation
- B(g);CHECK,XS(D)
- Try
- Q(G);CHECK,N_PINB(g)
- Vars
- S(c);XQ(G)::B(F),XR(e)
- Refutation
- K(h);P_SPINB(g),S_FLIGHT
- Try
- Actual
- S(E);
- Vars
- K(h);N_SPINB(g),N_SPINR(e),OGATEB,P-FLIGHT,P_SPINP(b),XS(E)::R(C)
- P(i);SBLOCK,XS(E)::B(F),XR(e)
- S(c);N_GUARD::QAB1(G)
- S(c);N_GUARD::QAB1(G),XS(c)
- P(b);::QAB1(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).