MESON Chess Problem Database
Problem Display
PID: 244433 (3K4/8/B1N1bp2/8/3Q1np1/2N1nkB1/6pP/3rr3 w - - 0 1)
Eerkes, Allard Pieter
Magyar Sakkvilag, 1935
#2
7 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qe4#
- 2.Qxf4#
- 1...Rb1
- 2.Qe4#
- 2.Qxf4#
- 1...Rc1
- 2.Qe4#
- 2.Qxf4#
- 1...Rxd4+
- 2.Sxd4#
- 1...Bd5
- 2.Qxf4#
- 1...Bd7
- 2.Qe4#
- 2.Qxf4#
- 1...Sed5
- 2.Qf2#
- 1...Sd3
- 2.Qe4#
- 1...Sfd5
- 2.Qe4#
- 1...f5
- 2.Se5#
- 1...Ra1
- Tries
- 1.Bd3?
- threat
- 2.Be4#
- 2.Qe4#
- 2.Qxf4#
- 1...Sxd3
- 2.Qe4#
- 1...g1Q
- 2.Be4#
- 2.Qe4#
- 1...g1S
- 2.Be4#
- 2.Qe4#
- 1...g1B
- 2.Be4#
- 2.Qe4#
- 1...g1R
- 2.Be4#
- 2.Qe4#
- 1...Bd5
- 2.Qxf4#
- 1...Bf5
- 2.Qxf4#
- 1...Sf1
- 2.Qf2#
- 2.Qxf4#
- 1...Sc2
- 2.Qf2#
- 2.Qxf4#
- 1...Sc4
- 2.Qf2#
- 2.Qxf4#
- 1...Sed5
- 2.Qf2#
- 1...Sf5
- 2.Qf2#
- 2.Qxf4#
- 1...Se2
- 2.Be4#
- 2.Qe4#
- 1...Sh3
- 2.Be4#
- 2.Qe4#
- 1...Sfd5
- 2.Be4#
- 2.Qe4#
- 1...Sh5
- 2.Be4#
- 2.Qe4#
- 1...Sg6
- 2.Be4#
- 2.Qe4#
- 1...f5
- 2.Se5#
- 2.Qxf4#
- 1...Rxd3!
- threat
- 1.Bd3?
- Keys
- 1.Bb7!
- threat
- 2.Se5#
- 1...Rxd4+
- 2.Sxd4#
- 1...Bd5
- 2.Qxf4#
- 1...Sed5
- 2.Qf2#
- 1...Sfd5
- 2.Qe4#
- threat
- 1.Bb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(a);CHECK,XQ(D)::S(F),XR(a)
- B(h);N_PINQ(D)::QAR1(D),XS(f)
- S(d);N_PINQ(D)::QAR1(D)
- S(f);N_PINQ(D)::QAB1(D)
- P(i);N_GUARD::S(F)
- Tries
- Try
- B(E);N_SPINQ(D)
- Threat
- DUALS(3)
- Vars
- S(f);XB(E)::QAB1(D)
- B(h);::QAR1(D),XS(f)
- S(d);OGATE::QAR1(D)
- Refutation
- R(a);P_PINQ(D),XB(E)
- Try
- Actual
- B(E);
- Threat
- B(E)+S(F),DCHECK
- Vars
- R(a);CHECK,XQ(D)::B(E)+S(F),DCHECK,XR(a)
- B(h);N_PINQ(D)::QAR1(D),XS(f)
- S(d);N_PINQ(D)::QAR1(D)
- S(f);N_PINQ(D)::QAB1(D)
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).