MESON Chess Problem Database
Problem Display
PID: 158820 (3BR3/3p1r2/1Kpk4/1n4Rb/1pB1n1r1/1p2N3/5N2/2Q5 w - - 0 1)
Akobiya, Yuri
Sachove umeni (Ceskoslovensky sach), 1978
#2
8 + 10
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Sxe4#
- 1...Rg2
- 2.Sxe4#
- 1...Rg3
- 2.Sxe4#
- 1...Rxg5
- 2.Sxe4#
- 1...Rxf2
- 2.Be7#
- 1...Rf3
- 2.Be7#
- 1...Rf4
- 2.Be7#
- 1...Rf5
- 2.Sxf5#
- 1...Rf6
- 2.Be7#
- 1...Re7
- 2.Bxe7#
- 1...Rg7
- 2.Sf5#
- 1...Rh7
- 2.Sf5#
- 1...Rf8
- 2.Be7#
- 1...Sf6
- 2.Sf5#
- 1...Sa3
- 2.Bc7#
- 1...Sc3
- 2.Bc7#
- 1...Sd4
- 2.Bc7#
- 1...Sa7
- 2.Bc7#
- 1...Sc7
- 2.Bxc7#
- 1...c5
- 2.Rd5#
- 1...Rg1
- Tries
- 1.Bxb3?
- threat
- 2.Sc4#
- 1...Rxg5
- 2.Sxe4#
- 1...Sxf2
- 2.Qc5#
- 1...Sxg5
- 2.Qc5#
- 1...Rf5
- 2.Sxf5#
- 1...Re7
- 2.Bxe7#
- 1...Sd2
- 2.Qc5#
- 1...Sg3
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sf6
- 2.Sf5#
- 2.Qc5#
- 1...Sa3
- 2.Bc7#
- 1...Sec3!
- threat
- 1.Bxb5?
- threat
- 2.Sc4#
- 2.Bc7#
- 1...Rxg5
- 2.Sxe4#
- 2.Bc7#
- 1...Sxf2
- 2.Bc7#
- 2.Qc5#
- 1...Sxg5
- 2.Bc7#
- 2.Qc5#
- 1...cxb5
- 2.Bc7#
- 2.Rd5#
- 2.Qc7#
- 1...Rf5
- 2.Bc7#
- 1...Sd2
- 2.Bc7#
- 2.Qc5#
- 1...Sc3
- 2.Bc7#
- 1...Sg3
- 2.Bc7#
- 2.Qc5#
- 1...Sc5
- 2.Bc7#
- 2.Qxc5#
- 1...Sf6
- 2.Bc7#
- 2.Qc5#
- 1...Re7!
- threat
- 1.Bxf7?
- threat
- 2.Sc4#
- 2.Sf5#
- 2.Be7#
- 1...Rxg5
- 2.Sxe4#
- 2.Sc4#
- 1...Sxf2
- 2.Sf5#
- 2.Be7#
- 2.Qc5#
- 1...Sxg5
- 2.Sf5#
- 2.Qc5#
- 1...Rf4
- 2.Sc4#
- 2.Be7#
- 1...Bg6
- 2.Sc4#
- 2.Be7#
- 1...Sd2
- 2.Sf5#
- 2.Be7#
- 2.Qc5#
- 1...Sec3
- 2.Sf5#
- 2.Be7#
- 1...Sg3
- 2.Be7#
- 2.Qc5#
- 1...Sc5
- 2.Sf5#
- 2.Be7#
- 2.Qxc5#
- 1...Sf6
- 2.Sf5#
- 2.Be7#
- 2.Qc5#
- 1...Sa3
- 2.Sf5#
- 2.Bc7#
- 2.Be7#
- 1...Sd4
- 2.Sc4#
- 2.Bc7#
- 2.Be7#
- 1...Bxf7!
- threat
- 1.Bf6?
- threat
- 2.Sf5#
- 2.Be5#
- 1...Rxg5
- 2.Sxe4#
- 1...Sxf6
- 2.Sf5#
- 1...Rf4
- 2.Be5#
- 1...Re7
- 2.Sf5#
- 2.Bxe7#
- 1...Bg6
- 2.Be5#
- 1...Sg3
- 2.Be5#
- 1...Sd4
- 2.Be5#
- 1...Rxf6!
- threat
- 1.Rg6+?
- 1...Rxg6
- 2.Sxe4#
- 1...Rf6
- 2.Sf5#
- 1...Sf6
- 2.Sf5#
- 1...Bxg6!
- 1...Rxg6
- 1.Qb2?
- threat
- 2.Qe5#
- 1...Rxg5
- 2.Sxe4#
- 1...Rf5
- 2.Sxf5#
- 2.Be7#
- 1...Re7
- 2.Sf5#
- 2.Bxe7#
- 1...Sbc3
- 2.Bc7#
- 1...Sd4
- 2.Bc7#
- 2.Qxd4#
- 1...Sec3!
- threat
- 1.Qd2+?
- 1...Sd4
- 2.Bc7#
- 2.Qxd4#
- 1...Sxd2!
- 1...Sd4
- 1.Qd1+?
- 1...Sd4
- 2.Bc7#
- 2.Qxd4#
- 1...Sd2!
- 1...Sd4
- 1.Bxb3?
- Keys
- 1.Rxb5!
- threat
- 2.Bc7#
- threat
- 1.Rxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 20
- Sets
- R(d);N_GUARD::S(B),XS(c)
- R(d);N_GUARD,XR(E)::S(B),XS(c)
- R(j);N_GUARD,XS(B)::B(G)
- R(j);N_GUARD::B(G)
- R(j);N_GUARD::S(C),XR(j)
- R(j);N_GUARD::B(G),XR(j)
- R(j);N_GUARD::S(C)
- S(c);S_CUTR(j)::S(C)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- P(g);N_GUARD::R1(E)
- Tries
- Try
- B(D);XP(a)
- Threat
- S(C)
- Vars
- R(d);N_GUARD,XR(E)::S(B),XS(c)
- S(c);N_GUARD,XS(B)::QAB1(A)
- S(c);N_GUARD,XR(E)::QAB1(A)
- R(j);N_GUARD::S(C),XR(j)
- R(j);N_GUARD::B(G),XR(j)
- S(c);N_GUARD::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(e);N_GUARD::B(G)
- Refutation
- S(c);
- Try
- B(D);XS(e)
- Threat
- DUALS(2)
- Vars
- R(j);::B(G)
- S(c);::B(G)
- Refutation
- R(j);
- Try
- B(D);XR(j)
- Threat
- DUALS(3)
- Refutation
- B(f);XB(D)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,XR(E)::S(B),XS(c)
- S(c);XB(G)::S(C)
- R(d);::B(G)
- B(f);::B(G)
- S(c);::B(G)
- S(e);::B(G)
- Refutation
- R(j);XB(G)
- Try
- R(E);CHECK
- Vars
- R(d);XR(E)::S(B),XS(c)
- R(j);P_SPINR(j)::S(C)
- S(c);P_SPINS(c)::S(C)
- Refutation
- B(f);XR(E)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(d);N_GUARD,XR(E)::S(B),XS(c)
- S(e);N_GUARD::B(G)
- Refutation
- S(c);
- Try
- Q(A);CHECK
- Refutation
- S(c);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- S(c);P_SPINS(c)
- Try
- Actual
- R(E);XS(e)
- Threat
- B(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).