MESON Chess Problem Database
Problem Display
PID: 237807 (K7/pN4b1/r7/3p4/3kn3/1R3B1Q/1N2R2B/3r4 w - - 0 1)
Palkoska, Emil
Arbejder-Skak, 1951
#2
8 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rda1
- 2.Rd3#
- 1...Rb1
- 2.Rd3#
- 1...Rc1
- 2.Rd3#
- 1...Re1
- 2.Rd3#
- 1...Rf1
- 2.Rd3#
- 1...Rg1
- 2.Rd3#
- 1...Rh1
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Sd2
- 2.Rd3#
- 1...Sc3
- 2.Rb4#
- 1...Sf6
- 2.Be5#
- 1...Rda1
- Tries
- 1.Bh1?
- threat
- 2.Rb4#
- 2.Qe3#
- 1...Rc1
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Rd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Ra4
- 2.Qe3#
- 1...Rb6
- 2.Qe3#
- 1...Rc6
- 2.Qe3#
- 1...Bh6
- 2.Rb4#
- 1...Bf8
- 2.Qe3#
- 1...Sd2
- 2.Rd3#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...Sd6
- 2.Qc3#
- 2.Qe3#
- 1...Sg3!
- threat
- 1.Bg2?
- threat
- 2.Rb4#
- 2.Qe3#
- 1...Rc1
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Rd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Ra4
- 2.Qe3#
- 1...Rb6
- 2.Qe3#
- 1...Rc6
- 2.Qe3#
- 1...Bh6
- 2.Rb4#
- 1...Bf8
- 2.Qe3#
- 1...Sd2
- 2.Rd3#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...Sd6
- 2.Qc3#
- 2.Qe3#
- 1...Sg3!
- threat
- 1.Bxe4?
- threat
- 2.Rb4#
- 2.Qc3#
- 2.Qe3#
- 1...Rc1
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Rd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Ra4
- 2.Qc3#
- 2.Qe3#
- 1...Rb6
- 2.Qc3#
- 2.Qe3#
- 1...Rc6
- 2.Qe3#
- 1...Bh6
- 2.Rb4#
- 2.Qc3#
- 1...Bf8
- 2.Qc3#
- 2.Qe3#
- 1...dxe4!
- threat
- 1.Bg4?
- threat
- 2.Rb4#
- 2.Qe3#
- 1...Rc1
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Rd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Ra4
- 2.Qe3#
- 1...Rb6
- 2.Qe3#
- 1...Rc6
- 2.Qe3#
- 1...Bh6
- 2.Rb4#
- 1...Bf8
- 2.Qe3#
- 1...Sd2
- 2.Rd3#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...Sd6
- 2.Qc3#
- 2.Qe3#
- 1...Sg3!
- threat
- 1.Bh5?
- threat
- 2.Rb4#
- 2.Qe3#
- 1...Rc1
- 2.Rd3#
- 2.Qd3#
- 2.Qe3#
- 1...Rd3
- 2.Rxd3#
- 2.Qxd3#
- 1...Ra4
- 2.Qe3#
- 1...Rb6
- 2.Qe3#
- 1...Rc6
- 2.Qe3#
- 1...Bh6
- 2.Rb4#
- 1...Bf8
- 2.Qe3#
- 1...Sd2
- 2.Rd3#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...Sd6
- 2.Qc3#
- 2.Qe3#
- 1...Sg3!
- threat
- 1.Rd2+?
- 1...Sxd2
- 2.Rd3#
- 1...Rxd2!
- 1...Sxd2
- 1.Bh1?
- Keys
- 1.Qd7!
- threat
- 2.Rxe4#
- 1...Re1
- 2.Rd3#
- 1...Rd6
- 2.Qa4#
- 1...Re6
- 2.Qa4#
- 1...Sd2
- 2.Rd3#
- 2.Qxd5#
- 1...Sf2
- 2.Qxd5#
- 1...Sc3
- 2.Rb4#
- 1...Sg3
- 2.Qxd5#
- 1...Sc5
- 2.Qxd5#
- 1...Sg5
- 2.Qxd5#
- 1...Sd6
- 2.Qxg7#
- 1...Sf6
- 2.Be5#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::R1(D)
- R(a);N_GUARD::R1(D),XR(a)
- S(c);S_CUTR(a)::R1(D)
- S(c);SBLOCK::R(D)
- S(c);S_CUTB(g)::B(C)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(e);::QAB1(F)
- B(g);::R(D)
- B(g);::QAB1(F)
- Refutation
- S(c);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(e);::QAB1(F)
- B(g);::R(D)
- B(g);::QAB1(F)
- Refutation
- S(c);
- Try
- B(E);XS(c)
- Threat
- DUALS(3)
- Vars
- R(e);::QAB1(F)
- Refutation
- P(d);XB(E)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(e);::QAB1(F)
- B(g);::R(D)
- B(g);::QAB1(F)
- Refutation
- S(c);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(e);::QAB1(F)
- B(g);::R(D)
- B(g);::QAB1(F)
- Refutation
- S(c);
- Try
- R(B);CHECK
- Vars
- S(c);XR(B)::R1(D)
- Refutation
- R(a);XR(B)
- Try
- Actual
- Q(F);P_PINP(d)
- Threat
- R1(B),XS(c)
- Vars
- R(a);N_GUARD::R1(D)
- R(e);N_GUARD,N_SPINP(d)::QAR(F)
- R(e);N_GUARD::QAR(F)
- S(c);::QAR1(F),XP(d)
- S(c);SBLOCK::R(D)
- S(c);N_GUARD,N_SPINP(d),S_CUTR(e)::QAB(F),XB(g)
- S(c);S_CUTB(g)::B(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).