MESON Chess Problem Database
Problem Display
PID: 36229 (B4B2/K1p3n1/1pN1r3/3k2N1/R2P4/1p5Q/2q3P1/3R1n2 w - - 0 1)
Loshinski, Lev Ilich
1st Prize, Trud, 1950
#2
10 + 8
| 45 | Schach | 1951 |
| 3105 | FIDE Album (1945-1955) | 1964 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Qxb3#
- 1...Qf5
- 2.Qxb3#
- 1...Qg6
- 2.Qxb3#
- 1...Qh7
- 2.Qxb3#
- 1...Qd2
- 2.Qxb3#
- 1...Qf2
- 2.Qxb3#
- 1...Qxg2
- 2.Qxb3#
- 1...Qc4
- 2.Sb4#
- 1...Qxc6
- 2.Qxb3#
- 1...Re1
- 2.Qd7#
- 1...Re2
- 2.Qd7#
- 1...Re3
- 2.Qd7#
- 1...Re4
- 2.Qd7#
- 1...Re5
- 2.Qd7#
- 1...Rxc6
- 2.Qd7#
- 1...Rd6
- 2.Se7#
- 1...Re8
- 2.Qd7#
- 1...Sh5
- 2.Qxe6#
- 1...Se8
- 2.Qxe6#
- 1...Qe4
- Tries
- 1.Sa5+?
- 1...Qc6
- 2.Qxb3#
- 1...Rc6
- 2.Qd7#
- 1...c6!
- 1...Qc6
- 1.Se5+?
- 1...Qc6
- 2.Qxb3#
- 2.Qf3#
- 1...Rc6
- 2.Qd7#
- 1...c6!
- 1...Qc6
- 1.Sb8+?
- 1...Qc6
- 2.Qxb3#
- 1...Rc6
- 2.Qd7#
- 1...c6!
- 1...Qc6
- 1.Sd8+?
- 1...Qc6
- 2.Qxb3#
- 1...Rc6
- 2.Qd7#
- 1...c6!
- 1...Qc6
- 1.Ba3?
- threat
- 2.Se7#
- 1...Qxc6
- 2.Qxb3#
- 1...Rxc6
- 2.Qd7#
- 1...Re7
- 2.Sxe7#
- 1...Qc5!
- threat
- 1.Qxb3+?
- 1...Qc4
- 2.Sb4#
- 2.Qxc4#
- 1...Qxb3!
- 1...Qc4
- 1.Qf3+?
- 1...Qe4
- 2.Qxb3#
- 1...Re4!
- 1...Qe4
- 1.Qg3?
- threat
- 2.Se7#
- 1...Qxc6
- 2.Qxb3#
- 1...Rxc6
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Re7
- 2.Sxe7#
- 1...Sxg3!
- threat
- 1.Sa5+?
- Keys
- 1.Se4!
- threat
- 2.Se7#
- 1...Kxe4
- 2.Qf3#
- 1...Qxe4
- 2.Qxb3#
- 1...Qxc6
- 2.Sc3#
- 1...Rxe4
- 2.Qd7#
- 1...Rxc6
- 2.Sf6#
- 1...Re7
- 2.Sxe7#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- Q(b);N_GUARD::QAB(C),XP(c)
- Q(b);N_GUARD,XP(B)::QAB(C),XP(c)
- Q(b);SBLOCK::B(I)+S(G),DCHECK
- Q(b);N_GUARD,P_SPINQ(b),XS(G)::QAB(C),XP(c)
- R(f);OGATE::QAR2(C)
- R(f);OGATE,P_SPINR(f),XS(G)::QAR2(C)
- R(f);SBLOCK::B(I)+S(G),DCHECK
- S(h);N_GUARD::QAB1(C),XR(f)
- Tries
- Try
- S(G);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAB(C),XP(c)
- R(f);OGATE,P_SPINR(f)::QAR2(C)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(G);CHECK
- Vars
- R(f);OGATE,P_SPINR(f)::QAR2(C)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(G);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAB(C),XP(c)
- R(f);OGATE,P_SPINR(f)::QAR2(C)
- Refutation
- P(g);P_SPINP(g)
- Try
- S(G);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAB(C),XP(c)
- R(f);OGATE,P_SPINR(f)::QAR2(C)
- Refutation
- P(g);P_SPINP(g)
- Try
- B(J);
- Threat
- B(I)+S(G),DCHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XS(G)::QAB(C),XP(c)
- R(f);OGATE,P_SPINR(f),XS(G)::QAR2(C)
- R(f);::B(I)+S(G),DCHECK,XR(f)
- Refutation
- Q(b);
- Try
- Q(C);CHECK,XP(c)
- Refutation
- Q(b);XQ(C)
- Try
- Q(C);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAB(C),XP(c)
- Refutation
- R(f);P_SPINR(f)
- Try
- Q(C);
- Threat
- B(I)+S(G),DCHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XS(G)::QAB(C),XP(c)
- R(f);N_GUARD,P_SPINR(f),XS(G)::QAR1(C)
- R(f);N_GUARD::QAR1(C),XR(f)
- R(f);::B(I)+S(G),DCHECK,XR(f)
- Refutation
- S(a);XQ(C)
- Try
- Actual
- S(F);
- Threat
- B(I)+S(G),DCHECK
- Vars
- K(d);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
- Q(b);N_GUARD,SBLOCK,XS(F)::QAB(C),XP(c)
- Q(b);N_GUARD,P_SPINQ(b),XS(G)::S(F)
- R(f);OGATE,SBLOCK,XS(F)::QAR2(C)
- R(f);N_GUARD,P_SPINR(f),XS(G)::S(F)
- R(f);::B(I)+S(G),DCHECK,XR(f)
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).