MESON Chess Problem Database
Problem Display
PID: 255635 (bb6/3n2p1/1p1rP3/1PpB2R1/p1pkP1R1/r3p1N1/4P3/1N4QK w - - 0 1)
Eerkes, Allard Pieter
Probleemblad, 1984
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qd1#
- 1...Rxd5
- 2.e5#
- 1...Bxd5
- 2.exd5#
- 1...Se5
- 2.Sf5#
- 1...c3
- 2.Qd1#
- 1...Ra1
- Tries
- 1.Bxa8?
- threat
- 2.e5#
- 1...Rc6
- 2.Rd5#
- 1...Se5
- 2.Sf5#
- 1...Sf6!
- threat
- 1.Qh2?
- threat
- 2.Sf5#
- 1...Rxd5
- 2.e5#
- 1...g6!
- threat
- 1.Qg2?
- threat
- 2.e5#
- 1...Bxd5
- 2.exd5#
- 1...Se5
- 2.Sf5#
- 1...Sf6!
- threat
- 1.Bxa8?
- Keys
- 1.Qc1!
- threat
- 2.Qxc4#
- 1...Rxd5
- 2.e5#
- 1...Bxd5
- 2.exd5#
- 1...Rc3
- 2.Qxc3#
- 1...Se5
- 2.Sf5#
- 1...c3
- 2.Qd1#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::QAR(B)
- R(h);SBLOCK,XB(I)::R(G)+P(F)
- B(k);OGATE,P_PINP(F),XB(I)::R(G)+P(F),XB(k)
- S(i);SBLOCK::S(E)
- P(d);S_CUTR(a)::QAR(B)
- Tries
- Try
- B(I);XB(k)
- Threat
- R(G)+P(F)
- Vars
- R(h);N_GUARD::R1(J)
- S(i);SBLOCK::S(E)
- Refutation
- S(i);
- Try
- Q(B);N_PINP(b)
- Threat
- S(E)
- Vars
- R(h);SBLOCK,XB(I)::R(G)+P(F)
- Refutation
- P(j);
- Try
- Q(B);N_PINP(b)
- Threat
- R(G)+P(F)
- Vars
- B(k);OGATE,XB(I)::R(G)+P(F),XB(k)
- S(i);SBLOCK::S(E)
- Refutation
- S(i);
- Try
- Actual
- Q(B);N_PINP(b)
- Threat
- QAR1(B),XP(d)
- Vars
- R(h);SBLOCK,XB(I)::R(G)+P(F)
- B(k);OGATE,P_PINP(F),XB(I)::R(G)+P(F),XB(k)
- R(a);N_GUARD::QAB1(B),XR(a)
- S(i);SBLOCK::S(E)
- P(d);S_CUTR(a)::QAR(B)
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).