MESON Chess Problem Database
Problem Display
PID: 157950 (2r5/bp6/4B2Q/5p2/4k3/2p5/2KnN1PB/3N1r2 w - - 0 1)
Antonov, Yuri Mikhailovich
Schach, 1974
#2
7 + 8
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rxd1
- 2.Qf4#
- 1...Re1
- 2.Qf4#
- 1...Rg1
- 2.Qf4#
- 1...Rh1
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rc5
- 2.Qe3#
- 1...Ra8
- 2.Sdxc3#
- 1...Rb8
- 2.Sdxc3#
- 1...Rd8
- 2.Sdxc3#
- 1...Re8
- 2.Sdxc3#
- 1...Rf8
- 2.Sdxc3#
- 1...Rg8
- 2.Sdxc3#
- 1...Rh8
- 2.Sdxc3#
- 1...Bf2
- 2.Qf4#
- 1...Be3
- 2.Qxe3#
- 1...Bc5
- 2.Sdxc3#
- 1...Bb8
- 2.Qe3#
- 1...Sf3
- 2.Qf4#
- 1...Sc4
- 2.Sdxc3#
- 1...b6
- 2.Qe3#
- 1...Rxd1
- Tries
- 1.Sf2+?
- 1...Bxf2
- 2.Qf4#
- 1...Rxf2!
- 1...Bxf2
- 1.Sexc3+?
- 1...Kd4
- 2.Qe3#
- 1...Rxc3+!
- 1...Kd4
- 1.Sg3+?
- 1...Kd4
- 2.Qe3#
- 1...Ke5!
- 1...Kd4
- 1.Bc4?
- threat
- 2.Sdxc3#
- 2.Qe6#
- 1...Rxd1
- 2.Qf4#
- 2.Qe6#
- 1...Rxc4
- 2.Qe6#
- 1...Sxc4
- 2.Sdxc3#
- 1...Rf4
- 2.Qxf4#
- 2.Qe6#
- 1...f4
- 2.Qe6#
- 1...Rf3
- 2.Qe6#
- 1...Rc5
- 2.Sdxc3#
- 2.Qe3#
- 1...Rc6
- 2.Sdxc3#
- 1...Re8
- 2.Sdxc3#
- 1...Bb8
- 2.Sdxc3#
- 2.Qe3#
- 1...Sb1
- 2.Qe6#
- 1...Sf3
- 2.Sdxc3#
- 2.Qf4#
- 1...Bd4!
- threat
- 1.Bxc8?
- threat
- 2.Sdxc3#
- 2.Bxb7#
- 2.Qe6#
- 1...Rxd1
- 2.Bxb7#
- 2.Qe6#
- 1...Rf4
- 2.Qe6#
- 1...f4
- 2.Qe6#
- 1...Rf3
- 2.Bxb7#
- 2.Qe6#
- 1...Bd4
- 2.Bxb7#
- 1...Bb8
- 2.Sdxc3#
- 2.Bxb7#
- 1...Sb1
- 2.Bxb7#
- 2.Qe6#
- 1...Sf3
- 2.Sdxc3#
- 2.Bxb7#
- 1...Sc4
- 2.Sdxc3#
- 2.Bxb7#
- 1...b5
- 2.Sdxc3#
- 2.Bb7#
- 2.Qc6#
- 2.Qe6#
- 1...b6
- 2.Sdxc3#
- 2.Bb7#
- 2.Qc6#
- 2.Qe6#
- 1...Kd5!
- threat
- 1.Qxd2?
- threat
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Rxd1
- 2.Bd5#
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 2.Qd5#
- 1...f4
- 2.Qd5#
- 1...Rf3
- 2.Bd5#
- 2.Qd5#
- 1...Rc5
- 2.Qe3#
- 2.Qd3#
- 2.Qd4#
- 1...Rd8
- 2.Sdxc3#
- 2.Sexc3#
- 1...Bd4
- 2.Qd3#
- 2.Qxd4#
- 1...cxd2+!
- threat
- 1.Qh4+?
- 1...Rf4
- 2.Qxf4#
- 1...f4!
- 1...Rf4
- 1.Sf2+?
- Keys
- 1.Qf6!
- threat
- 2.Qe5#
- 1...Rf4
- 2.Sg3#
- 1...Rc5
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Bb8
- 2.Qd4#
- 1...Sf3
- 2.Qxf5#
- 1...Sc4
- 2.Sexc3#
- 1...f4
- 2.Qf5#
- threat
- 1.Qf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- R(a);N_GUARD,XS(A)::QAR1(G)
- R(a);N_GUARD::QAR1(G)
- R(a);N_GUARD::QAR1(G),XR(a)
- R(h);S_CUTB(f)::QAR1(G)
- R(h);N_GUARD::S(A),XP(c)
- B(f);S_CUTR(a)::QAR1(G)
- B(f);N_GUARD::QAR1(G),XB(f)
- B(f);S_CUTR(h)::S(A),XP(c)
- B(f);N_GUARD::QAR1(G)
- S(b);S_CUTR(a)::QAR1(G)
- S(b);S_CUTR(h)::S(A),XP(c)
- P(g);S_CUTB(f)::QAR1(G)
- Tries
- Try
- S(A);CHECK
- Vars
- B(f);XS(A)::QAR1(G)
- Refutation
- R(a);XS(A)
- Try
- S(C);CHECK,P_SPINS(C),XP(c)
- Vars
- K(d);P-FLIGHT::QAB1(G)
- Refutation
- R(h);CHECK,XS(C)
- Try
- S(C);CHECK
- Vars
- K(d);P-FLIGHT::QAB1(G)
- Refutation
- K(d);P-FLIGHT
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- R(h);XB(F)::QAR2(G)
- S(b);XB(F)::S(A),XP(c)
- P(e);::QAR2(G)
- R(a);::QAR2(G)
- R(h);::S(A),XP(c)
- S(b);::QAR2(G)
- Refutation
- B(f);
- Try
- B(F);XR(h)
- Threat
- DUALS(3)
- Vars
- R(a);::QAR2(G)
- P(e);::QAR2(G)
- B(f);::B(F),XP(g)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(G);XS(b)
- Threat
- DUALS(3)
- Vars
- P(e);::QAB1(G)
- Refutation
- P(c);CHECK,XQ(G)
- Try
- Q(G);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(G),XR(a)
- Refutation
- P(e);P_SPINP(e)
- Try
- Actual
- Q(G);
- Threat
- QAR1(G)
- Vars
- R(a);SBLOCK::S(C)
- R(h);S_CUTB(f)::QAR1(G)
- B(f);N_GUARD::QAR1(G),XB(f)
- B(f);N_GUARD::QAR1(G)
- S(b);S_CUTR(a)::QAB1(G),XP(e)
- S(b);S_CUTR(h)::S(C),XP(c)
- P(e);S_CUTR(a)::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).