MESON Chess Problem Database
Problem Display
PID: 187382 (1Brb4/R3p2b/2R1pn2/1p1kN1n1/1PN5/2P5/3PQ3/K7 w - - 0 1)
Barnes, Barry Peter
3rd HM., StrateGems, 2018
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rc7
- 2.Sb6#
- 1...Rxb8
- 2.Rc5#
- 1...Bd3
- 2.Qxd3#
- 1...Be4
- 2.Se3#
- 1...Bg8
- 2.Qd3#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Rc5#
- 1...Sge4
- 2.Se3#
- 2.Qd3#
- 1...Sfe4
- 2.Se3#
- 2.Qd3#
- 1...Sg4
- 2.Rd7#
- 1...Sh5
- 2.Rd7#
- 1...Sd7
- 2.Rxd7#
- 1...Sg8
- 2.Rd7#
- 1...bxc4
- 2.Qxc4#
- 1...Rc7
- Tries
- 1.Bc7?
- threat
- 2.Sb6#
- 2.Rc5#
- 1...Rxc7
- 2.Sb6#
- 1...Bxc7
- 2.Rc5#
- 1...bxc4
- 2.Rc5#
- 2.Ra5#
- 2.Qxc4#
- 1...Rb8
- 2.Rc5#
- 1...Sge4
- 2.Se3#
- 2.Sb6#
- 2.Qd3#
- 1...Sfe4
- 2.Se3#
- 2.Sb6#
- 2.Qd3#
- 1...Sd7!
- threat
- 1.Rxc8?
- threat
- 2.Rc5#
- 1...Bb6
- 2.Sxb6#
- 1...Sge4
- 2.Se3#
- 2.Qd3#
- 1...Sfe4
- 2.Se3#
- 2.Qd3#
- 1...Sd7
- 2.Rxd7#
- 1...Bc7!
- threat
- 1.Rb7?
- threat
- 2.Rxb5#
- 1...Rxb8
- 2.Rc5#
- 1...bxc4
- 2.Rb5#
- 2.Qxc4#
- 1...Bb6
- 2.Sxb6#
- 1...Sge4
- 2.Se3#
- 2.Qd3#
- 1...Sfe4
- 2.Se3#
- 2.Qd3#
- 1...Sd7
- 2.Rxd7#
- 1...Rxc6!
- threat
- 1.Rac7?
- threat
- 2.Sb6#
- 2.Rc5#
- 1...Rxc7
- 2.Sb6#
- 1...Rxb8
- 2.Rc5#
- 1...Bxc7
- 2.Rc5#
- 1...Be4
- 2.Rc5#
- 1...Sge4
- 2.Qd3#
- 1...Sfe4
- 2.Qd3#
- 1...Sd7
- 2.Rxd7#
- 1...bxc4!
- threat
- 1.Qf3+?
- 1...Be4
- 2.Se3#
- 1...Sge4
- 2.Se3#
- 2.Qd3#
- 1...Sfe4
- 2.Se3#
- 2.Rd7#
- 2.Qd3#
- 1...Sxf3!
- 1...Be4
- 1.Qg4?
- threat
- 2.Se3#
- 2.Qd4#
- 1...Rxb8
- 2.Rc5#
- 2.Qd4#
- 1...bxc4
- 2.Qxc4#
- 2.Qd4#
- 1...Rc7
- 2.Qd4#
- 1...Be4
- 2.Se3#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Rc5#
- 2.Qd4#
- 1...Sf3
- 2.Se3#
- 1...Sge4
- 2.Se3#
- 2.Qxe6#
- 1...Sfe4
- 2.Se3#
- 1...Sxg4!
- threat
- 1.Qg2+?
- 1...Be4
- 2.Se3#
- 1...Sge4
- 2.Se3#
- 1...Sfe4
- 2.Se3#
- 2.Rd7#
- 1...Sf3!
- 1...Be4
- 1.Qe3?
- threat
- 2.Qd4#
- 1...Bb6
- 2.Sxb6#
- 1...Sf3!
- threat
- 1.Qe4+?
- 1...Bxe4
- 2.Se3#
- 1...Sgxe4
- 2.Se3#
- 1...Sfxe4
- 2.Se3#
- 1...Kxe4!
- 1...Bxe4
- 1.Bc7?
- Keys
- 1.d3!
- threat
- 2.Se3#
- 1...Rxb8
- 2.Rc5#
- 1...Bxd3
- 2.Qxd3#
- 1...bxc4
- 2.dxc4#
- 1...Rc7
- 2.Sb6#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Rc5#
- 1...Sg4
- 2.Rd7#
- threat
- 1.d3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(h);S_CUTB(i)::S(F)
- R(h);N_GUARD,XB(J)::R1(H)
- B(g);N_GUARD::QAR2(C),XB(g)
- B(g);SBLOCK::S(F)
- B(g);N_GUARD::QAR2(C)
- B(i);N_GUARD::S(F),XB(i)
- B(i);S_CUTR(h)::R1(H)
- S(e);N_GUARD::R(I)
- S(e);N_GUARD::R(I),XS(e)
- P(a);OGATE,XS(F)::QAB1(C),XP(a)
- Tries
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- R(h);XB(J)::S(F)
- B(i);XB(J)::R1(H)
- R(h);::R1(H)
- Refutation
- S(e);
- Try
- R(H);XR(h)
- Threat
- R1(H)
- Vars
- B(i);N_GUARD::S(F),XB(i)
- S(e);N_GUARD::R(I),XS(e)
- Refutation
- B(i);
- Try
- R(I);
- Threat
- R(I),XP(a)
- Vars
- R(h);N_GUARD,XB(J)::R1(H)
- B(i);N_GUARD::S(F),XB(i)
- S(e);N_GUARD::R(I),XS(e)
- Refutation
- R(h);XR(H)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- R(h);XR(I)::S(F)
- R(h);XB(J)::R1(H)
- B(i);XR(I)::R1(H)
- B(g);::R1(H)
- S(c);S_CUTB(g)::QAR2(C)
- S(e);S_CUTB(g)::QAR2(C)
- S(e);N_GUARD::R(I),XS(e)
- Refutation
- P(a);XS(F)
- Try
- Q(C);CHECK
- Vars
- B(g);P_SPINB(g)::S(F)
- Refutation
- S(c);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(h);::QAR1(C)
- B(g);::S(F)
- B(i);N_GUARD::S(F),XB(i)
- S(c);::S(F)
- S(e);::S(F)
- Refutation
- S(e);XQ(C)
- Try
- Q(C);CHECK
- Vars
- B(g);P_SPINB(g)::S(F)
- S(c);P_SPINS(c)::S(F)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- B(i);N_GUARD::S(F),XB(i)
- Refutation
- S(c);
- Try
- Q(C);CHECK
- Vars
- B(g);SBLOCK,XQ(C)::S(F)
- S(c);SBLOCK,XQ(C)::S(F)
- S(e);SBLOCK,XQ(C)::S(F)
- Refutation
- K(b);S_FLIGHT,XQ(C)
- Try
- Actual
- P(B);
- Threat
- S(F)
- Vars
- R(h);N_GUARD,XB(J)::R1(H)
- B(g);OGATE,XP(B)::QAR2(C),XB(g)
- P(a);OGATE,XS(F)::P(B),XP(a)
- R(h);S_CUTB(i)::S(F)
- B(i);N_GUARD::S(F),XB(i)
- B(i);S_CUTR(h)::R1(H)
- S(e);N_GUARD::R(I)
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).