MESON Chess Problem Database
Problem Display
PID: 145308 (2Bbrrb1/8/2P5/Q1R2p2/PPp1k2p/7N/3PP2N/5KB1 w - - 0 1)
Liew, Chee Meng
The Problemist, 1984
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Rxc4#
- 1...Rf7
- 2.Rxc4#
- 1...Bf6
- 2.Bxf5#
- 1...Be7
- 2.Re5#
- 1...Be6
- 2.Re5#
- 1...Bf7
- 2.Bxf5#
- 1...Bh7
- 2.Rxc4#
- 1...c3
- 2.d3#
- 1...Re5
- Tries
- 1.Sf3?
- 1...Bxa5
- 2.Sfg5#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Rxc4#
- 1...Re7
- 2.Sfg5#
- 1...Rf6
- 2.Sfg5#
- 1...Rf7
- 2.Rxc4#
- 1...Bg5
- 2.Sfxg5#
- 1...Bb6
- 2.Sfg5#
- 1...Bf6
- 2.Bxf5#
- 1...Bc7
- 2.Sfg5#
- 1...Be7
- 2.Re5#
- 1...Be6
- 2.Re5#
- 1...Bf7
- 2.Bxf5#
- 1...Bh7
- 2.Rxc4#
- 1...c3
- 2.d3#
- 1...f4
- 2.Sf2#
- 1...Bd5!
- 1...Bxa5
- 1.Sf2+?
- 1...Kd4
- 2.Sf3#
- 1...Kf4!
- 1...Kd4
- 1.Be6?
- threat
- 2.Rxc4#
- 2.Re5#
- 1...Rxe6
- 2.Rxc4#
- 1...Bxe6
- 2.Re5#
- 1...Bb6
- 2.Re5#
- 1...Bf6
- 2.Bxf5#
- 1...Bc7
- 2.Rxc4#
- 1...c3
- 2.Rc4#
- 2.Re5#
- 2.d3#
- 1...Bxa5!
- threat
- 1.Qxd8?
- threat
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- 1...Rxd8!
- threat
- 1.Sf3?
- Keys
- 1.Rxf5!
- 1...Rxf5+
- 2.Bxf5#
- 2.Qxf5#
- 1...Bxa5
- 2.Sg5#
- 1...Re5
- 2.Qxe5#
- 1...Re6
- 2.Qd5#
- 1...Re7
- 2.Sg5#
- 1...Rf6
- 2.Sg5#
- 1...Rf7
- 2.Qd5#
- 1...Bg5
- 2.Sxg5#
- 1...Bb6
- 2.Sg5#
- 1...Bf6
- 2.Rf4#
- 1...Bc7
- 2.Sg5#
- 1...Be7
- 2.Qe5#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Qe5#
- 1...Bf7
- 2.Rf4#
- 1...Bh7
- 2.Qd5#
- 1...c3
- 2.d3#
- 1...Rxf5+
- 1.Rxf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::R1(J),XR(f)
- R(f);S_CUTB(h)::R(J),XP(a)
- R(g);S_CUTB(h)::R(J),XP(a)
- B(e);S_CUTR(g)::B(L),XP(d)
- B(e);S_CUTR(f)::R1(J)
- B(h);S_CUTR(f)::R1(J)
- B(h);S_CUTR(g)::B(L),XP(d)
- B(h);N_GUARD::R(J),XP(a)
- P(a);N_GUARD::P(C)
- Tries
- Try
- S(E);
- Vars
- B(e);N_GUARD,XQ(I)::S(E)
- R(f);N_GUARD::R1(J),XR(f)
- R(f);S_CUTB(h)::R(J),XP(a)
- R(f);S_CUTB(e)::S(E)
- R(g);S_CUTB(e)::S(E)
- R(g);S_CUTB(h)::R(J),XP(a)
- B(e);N_GUARD::S(E),XB(e)
- B(e);N_GUARD::S(E)
- B(e);S_CUTR(g)::B(L),XP(d)
- B(e);S_CUTR(f)::R1(J)
- B(h);S_CUTR(f)::R1(J)
- B(h);S_CUTR(g)::B(L),XP(d)
- B(h);N_GUARD::R(J),XP(a)
- P(a);N_GUARD::P(C)
- P(d);SBLOCK::S(F)
- Refutation
- B(h);
- Try
- S(F);CHECK
- Vars
- K(b);P-FLIGHT::S(E)
- Refutation
- K(b);P-FLIGHT
- Try
- B(L);
- Threat
- DUALS(2)
- Vars
- R(f);XB(L)::R(J),XP(a)
- B(h);XB(L)::R1(J)
- B(e);::R1(J)
- B(e);S_CUTR(g)::B(L),XP(d)
- B(e);::R(J),XP(a)
- Refutation
- B(e);XQ(I)
- Try
- Q(I);XB(e)
- Threat
- QAR1(I)
- Vars
- B(h);N_GUARD::QAB1(I),XB(h)
- Refutation
- R(f);XQ(I)
- Try
- Actual
- R(J);P_SPINR(J),XP(d)
- Vars
- B(e);N_GUARD,XQ(I)::S(F)
- R(f);N_GUARD::QAR1(I),XR(f)
- R(f);S_CUTB(h)::QAB1(I)
- R(f);S_CUTB(e)::S(F)
- R(g);S_CUTB(e)::S(F)
- R(g);S_CUTB(h)::QAB1(I)
- B(e);N_GUARD::S(F),XB(e)
- B(e);N_GUARD::S(F)
- B(e);N_PINR(J),S_CUTR(g)::R1(J)
- B(e);S_CUTR(f)::QAR1(I)
- B(h);N_GUARD::QAB1(I),XB(h)
- B(h);S_CUTR(f)::QAR1(I)
- B(h);N_PINR(J),S_CUTR(g)::R1(J)
- B(h);N_GUARD::QAB1(I)
- P(a);N_GUARD::P(C)
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).