MESON Chess Problem Database
Problem Display
PID: 73971 (3K4/p2N2B1/1pPPp3/3R4/BNk3r1/2P3nR/2pnrp1b/3qQ3 w - - 0 1)
Eerkes, Allard Pieter
Tijdschrift vd KNSB, 1938
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Bb5#
- 1...Sde4
- 2.Se5#
- 1...Sge4
- 2.Rd4#
- 1...b5
- 2.Rc5#
- 1...a5
- 2.Sxb6#
- 1...a6
- 2.Sxb6#
- 1...Sb3
- Keys
- 1.c7!
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qxe1
- 2.c8Q#
- 2.c8R#
- 1...Rxe1
- 2.c8Q#
- 2.c8R#
- 1...Rxg7
- 2.c8Q#
- 2.c8R#
- 1...fxe1Q
- 2.c8Q#
- 2.c8R#
- 1...fxe1S
- 2.c8Q#
- 2.c8R#
- 1...fxe1B
- 2.c8Q#
- 2.c8R#
- 1...fxe1R
- 2.c8Q#
- 2.c8R#
- 1...exd5
- 2.c8Q#
- 2.c8R#
- 1...Re5
- 2.c8Q#
- 2.c8R#
- 1...Rd4
- 2.c8Q#
- 2.c8R#
- 1...e5
- 2.c8Q#
- 2.c8R#
- 1...c1Q
- 2.c8Q#
- 2.c8R#
- 1...c1S
- 2.c8Q#
- 2.c8R#
- 1...c1B
- 2.c8Q#
- 2.c8R#
- 1...c1R
- 2.c8Q#
- 2.c8R#
- 1...f1Q
- 2.c8Q#
- 2.c8R#
- 1...f1S
- 2.c8Q#
- 2.c8R#
- 1...f1B
- 2.c8Q#
- 2.c8R#
- 1...f1R
- 2.c8Q#
- 2.c8R#
- 1...Qa1
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.c8Q#
- 2.c8R#
- 1...Qc1
- 2.c8Q#
- 2.c8R#
- 1...Re3
- 2.c8Q#
- 2.c8R#
- 1...Ree4
- 2.c8Q#
- 2.c8R#
- 1...Rge4
- 2.c8Q#
- 2.c8R#
- 1...Rf4
- 2.c8Q#
- 2.c8R#
- 1...Rh4
- 2.c8Q#
- 2.c8R#
- 1...Rg5
- 2.c8Q#
- 2.c8R#
- 1...Rg6
- 2.c8Q#
- 2.c8R#
- 1...Bg1
- 2.c8Q#
- 2.c8R#
- 1...Sb1
- 2.c8Q#
- 2.c8R#
- 1...Sdf1
- 2.c8Q#
- 2.c8R#
- 1...Sb3
- 2.Bb5#
- 1...Sf3
- 2.c8Q#
- 2.c8R#
- 1...Sde4
- 2.Se5#
- 1...Sgf1
- 2.c8Q#
- 2.c8R#
- 1...Sh1
- 2.c8Q#
- 2.c8R#
- 1...Sge4
- 2.Rd4#
- 1...Sf5
- 2.c8Q#
- 2.c8R#
- 1...Sh5
- 2.c8Q#
- 2.c8R#
- 1...b5
- 2.Rc5#
- 2.c8Q#
- 2.c8R#
- 1...a5
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- 1...a6
- 2.Sxb6#
- 2.c8Q#
- 2.c8R#
- threat
- 1.c7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- S(c);SBLOCK::B(D)
- S(c);S_CUTR(d)::S(I)
- S(g);S_CUTR(i)::R1(F)
- P(j);N_GUARD::R1(F)
- P(l);N_GUARD::S(I),XP(j)
- Actual
- P(G);
- Threat
- P=Q
- Vars
- Q(a);XQ(A)::P=Q
- R(d);XQ(A)::P=Q
- R(i);XB(J)::P=Q
- P(e);XQ(A)::P=Q
- P(k);XR(F)::P=Q
- R(d);::P=Q
- R(i);::P=Q
- P(k);::P=Q
- P(b);::P=Q
- P(e);::P=Q
- Q(a);::P=Q
- B(f);::P=Q
- S(c);::P=Q
- S(c);SBLOCK::B(D)
- S(c);S_CUTR(d)::S(I)
- S(g);::P=Q
- S(g);S_CUTR(i)::R1(F)
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).