MESON Chess Problem Database
Problem Display
PID: 62291 (2NNQ1b1/3p4/nB5p/3kP3/R7/1K1B4/2R5/b2nr3 w - - 0 1)
Yaroslavtsev, Arkady Ivanovich
Shakhmaty v SSSR, 1951
#2
9 + 8
| 45 | Schach | 1952 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Be4#
- 1...Rg1
- 2.Be4#
- 1...Rh1
- 2.Be4#
- 1...Re4
- 2.Bxe4#
- 1...Rxe5
- 2.Qxd7#
- 1...Bd4
- 2.Rxd4#
- 1...Bxe5
- 2.Qxg8#
- 1...Sb2
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Se3
- 2.Be4#
- 1...Sb4
- 2.Ra5#
- 1...Sc5+
- 2.Rxc5#
- 1...Sc7
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 2.Ra5#
- 1...Rf1
- Tries
- 1.Sc6?
- threat
- 2.Qxd7#
- 2.Qxg8#
- 1...Sc5+
- 2.Rxc5#
- 1...Rxe5
- 2.Qxd7#
- 1...Bxe5
- 2.Qxg8#
- 1...Bc3
- 2.Qxd7#
- 1...Sc3
- 2.Qxd7#
- 1...Rf1
- 2.Be4#
- 2.Qxd7#
- 1...Rg1
- 2.Be4#
- 2.Qxd7#
- 1...Be6
- 2.S8e7#
- 1...Bf7
- 2.Qxd7#
- 2.Qxf7#
- 1...Bh7
- 2.Qxd7#
- 2.Qf7#
- 1...Sc7
- 2.Sb4#
- 2.Rc5#
- 2.Qxd7#
- 1...Sb8
- 2.Sb4#
- 2.Rc5#
- 2.Ra5#
- 2.Qxg8#
- 1...d6
- 2.Qxg8#
- 1...dxc6!
- threat
- 1.Bxa6?
- threat
- 2.Bb7#
- 2.Rc5#
- 1...Bd4
- 2.Bb7#
- 2.Rxd4#
- 1...Be6
- 2.Rc5#
- 1...Bc3
- 2.Bb7#
- 1...Sc3
- 2.Bb7#
- 2.Rd2#
- 2.Rd4#
- 1...d6
- 2.Bb7#
- 2.Qb5#
- 1...Re3+!
- threat
- 1.Bg1?
- threat
- 2.Sb6#
- 1...Sc5+
- 2.Rxc5#
- 1...Rxe5
- 2.Qxd7#
- 1...Bxe5
- 2.Qxg8#
- 1...Bd4
- 2.Rxd4#
- 1...Be6!
- threat
- 1.Bf2?
- threat
- 2.Sb6#
- 1...Sc5+
- 2.Rxc5#
- 1...Rxe5
- 2.Qxd7#
- 1...Bxe5
- 2.Qxg8#
- 1...Bd4
- 2.Rxd4#
- 1...Be6!
- threat
- 1.Be3?
- threat
- 2.Sb6#
- 2.Be4#
- 1...Sc5+
- 2.Rxc5#
- 1...Rxe3
- 2.Sb6#
- 1...Bxe5
- 2.Be4#
- 2.Qxg8#
- 1...Bd4
- 2.Rxd4#
- 1...Bh7
- 2.Sb6#
- 1...Sf2
- 2.Sb6#
- 1...Sc3
- 2.Sb6#
- 1...Sb4
- 2.Sb6#
- 2.Rc5#
- 2.Ra5#
- 1...Be6!
- threat
- 1.Bd4?
- threat
- 2.Sb6#
- 2.Se7#
- 2.Qxd7#
- 2.Qxg8#
- 1...Sc5+
- 2.Rxc5#
- 1...Rxe5
- 2.Qxd7#
- 2.Qxe5#
- 1...Sb4
- 2.Qxd7#
- 1...Rf1
- 2.Sb6#
- 2.Se7#
- 2.Qxd7#
- 1...Rg1
- 2.Sb6#
- 2.Se7#
- 2.Qxd7#
- 1...Be6
- 2.Sb6#
- 2.Se7#
- 1...Bf7
- 2.Sb6#
- 2.Se7#
- 2.Qxd7#
- 2.Qxf7#
- 1...Bh7
- 2.Sb6#
- 2.Se7#
- 2.Qxd7#
- 2.Qf7#
- 1...Sc7
- 2.Sb6#
- 2.Se7#
- 2.Rc5#
- 2.Qxd7#
- 1...Sb8
- 2.Sb6#
- 2.Se7#
- 2.Rc5#
- 2.Qxg8#
- 1...d6
- 2.Sb6#
- 2.Se7#
- 2.Qc6#
- 2.Qxg8#
- 1...Bxd4!
- threat
- 1.Re4?
- threat
- 2.Se7#
- 2.Qxd7#
- 2.Qxg8#
- 1...Sc5+
- 2.Rxc5#
- 1...Bxe5
- 2.Qxe5#
- 2.Qxg8#
- 1...Rf1
- 2.Se7#
- 2.Qxd7#
- 1...Rg1
- 2.Se7#
- 2.Qxd7#
- 1...Be6
- 2.Se7#
- 1...Bf7
- 2.Se7#
- 2.Qxd7#
- 2.Qxf7#
- 1...Bh7
- 2.Se7#
- 2.Qxd7#
- 2.Qf7#
- 1...Sc7
- 2.Se7#
- 2.Rc5#
- 2.Qxd7#
- 1...Sb8
- 2.Se7#
- 2.Rc5#
- 2.Qxg8#
- 1...d6
- 2.Se7#
- 2.Qc6#
- 2.Qxg8#
- 1...Rxe4!
- threat
- 1.Qe7?
- threat
- 2.Qd6#
- 1...Sc5+
- 2.Rxc5#
- 2.Qxc5#
- 1...d6
- 2.Qxd6#
- 1...Bxe5!
- threat
- 1.Qf8?
- threat
- 2.Qd6#
- 1...Sc5+
- 2.Rxc5#
- 2.Qxc5#
- 1...Bxe5
- 2.Qxg8#
- 1...d6
- 2.Qxd6#
- 1...Kxe5+!
- threat
- 1.Sc6?
- Keys
- 1.Qh5!
- threat
- 2.Se7#
- 1...Sc5+
- 2.Rxc5#
- 1...Rxe5
- 2.Be4#
- 1...Bxe5
- 2.Rd4#
- threat
- 1.Qh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- R(c);N_GUARD::B(C)
- R(c);N_GUARD::B(C),XR(c)
- R(c);SBLOCK,XP(E)::QAR2(I),XP(g)
- B(a);N_GUARD::R1(D),XB(a)
- B(a);SBLOCK,XP(E)::QAB(I),XB(h)
- S(b);S_CUTB(a)::R1(D)
- S(b);S_CUTR(c)::B(C)
- S(e);N_GUARD::R(D)
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- S(e);N_GUARD::R1(A)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- R(c);XP(E)::QAR2(I),XP(g)
- B(a);XP(E)::QAB(I),XB(h)
- B(a);::QAR2(I),XP(g)
- S(b);::QAR2(I),XP(g)
- B(h);SBLOCK::S(G)
- P(g);::QAB(I),XB(h)
- Refutation
- P(g);XS(H)
- Try
- B(C);XS(e)
- Threat
- DUALS(2)
- Vars
- B(h);::R1(A)
- B(a);::B(C)
- Refutation
- R(c);CHECK
- Try
- B(F);
- Threat
- S(G)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- R(c);SBLOCK,XP(E)::QAR2(I),XP(g)
- B(a);SBLOCK,XP(E)::QAB(I),XB(h)
- B(a);N_GUARD::R1(D),XB(a)
- Refutation
- B(h);
- Try
- B(F);
- Threat
- S(G)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- R(c);SBLOCK,XP(E)::QAR2(I),XP(g)
- B(a);SBLOCK,XP(E)::QAB(I),XB(h)
- B(a);N_GUARD::R1(D),XB(a)
- Refutation
- B(h);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- R(c);P_PINB(C),XB(F)::S(G)
- B(a);N_GUARD::R1(D),XB(a)
- B(h);::S(G)
- S(b);::S(G)
- Refutation
- B(h);
- Try
- B(F);
- Threat
- DUALS(4)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- S(e);::QAR2(I),XP(g)
- Refutation
- B(a);XB(F)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- B(h);::S(G)
- Refutation
- R(c);XR(D)
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- P(g);::QAR1(I),XP(g)
- Refutation
- B(a);XP(E)
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- B(a);SBLOCK,XP(E)::QAB(I),XB(h)
- P(g);::QAR1(I),XP(g)
- Refutation
- K(d);CHECK,P-FLIGHT,XP(E)
- Try
- Actual
- Q(I);
- Threat
- S(G)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- R(c);N_GUARD,P_SPINR(c),XP(E)::B(C)
- B(a);N_GUARD,P_SPINB(a),XP(E)::R1(D)
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).