MESON Chess Problem Database
Problem Display
PID: 240238 (6b1/B4r1p/B1ppR3/1r6/4KPpN/3N4/2Ppk3/7Q w - - 0 1)
Ellerman, Arnoldo
Tijdschrift vd KNSB, 1932
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Kd4#
- 2.Sc1#
- 2.Sb2#
- 2.Sb4#
- 1...Rb2
- 2.Kd4#
- 2.Sc1#
- 2.Sxb2#
- 2.Sb4#
- 1...Rb3
- 2.Kd4#
- 2.Sc1#
- 1...Rb4+
- 2.Sxb4#
- 1...Ra5
- 2.Sc1#
- 1...Rd5
- 2.Sc1#
- 1...Re5+
- 2.Sxe5#
- 1...Rbf5
- 2.Sc1#
- 2.Se5#
- 1...Rg5
- 2.Sc1#
- 2.Se5#
- 1...Rh5
- 2.Sc1#
- 2.Se5#
- 1...Rb6
- 2.Kd4#
- 1...Rbb7
- 2.Kd4#
- 2.Sc1#
- 1...Rb8
- 2.Kd4#
- 2.Sc1#
- 1...Rxf4+
- 2.Sxf4#
- 1...d1Q
- 2.Qg2#
- 1...d1S
- 2.Qe1#
- 1...d1B
- 2.Qg2#
- 2.Qe1#
- 1...d1R
- 2.Qg2#
- 1...g3
- 2.Qf3#
- 1...c5
- 2.Kd5#
- 1...d5+
- 2.Kd4#
- 1...Rb1
- Tries
- 1.Sf5?
- threat
- 2.Sg3#
- 2.Sd4#
- 1...Rb4+
- 2.Sxb4#
- 1...Re5+
- 2.Sxe5#
- 1...d5+
- 2.Kd4#
- 1...Rbxf5
- 2.Sc1#
- 2.Se5#
- 1...d1Q
- 2.Qg2#
- 1...d1S
- 2.Qe1#
- 1...d1B
- 2.Qg2#
- 2.Qe1#
- 1...d1R
- 2.Qg2#
- 1...Rd5
- 2.Sc1#
- 2.Sg3#
- 1...g3
- 2.Sxg3#
- 2.Sd4#
- 2.Qf3#
- 1...c5
- 2.Kd5#
- 2.Sg3#
- 1...Rfxf5!
- threat
- 1.Bxb5?
- threat
- 2.Kd4#
- 2.Sc1#
- 1...Rxf4+
- 2.Sxf4#
- 1...d5+
- 2.Kd4#
- 1...cxb5
- 2.Kd4#
- 2.Kd5#
- 1...d1Q
- 2.Qg2#
- 1...d1S
- 2.Qe1#
- 1...d1B
- 2.Qg2#
- 2.Qe1#
- 1...d1R
- 2.Qg2#
- 1...Rf5
- 2.Sc1#
- 1...Rf6
- 2.Sc1#
- 1...Rb7
- 2.Sc1#
- 1...Rc7
- 2.Sc1#
- 1...Rd7
- 2.Sc1#
- 1...Re7
- 2.Sc1#
- 1...Rg7
- 2.Sc1#
- 1...Rf8
- 2.Sc1#
- 1...c5
- 2.Kd5#
- 1...Rxa7!
- threat
- 1.Qh2+?
- 1...Kf1
- 2.Qf2#
- 2.Qg2#
- 1...Kd1!
- 1...Kf1
- 1.Sf5?
- Keys
- 1.Sf3!
- threat
- 2.Sd4#
- 1...Rb4+
- 2.Sxb4#
- 1...Re5+
- 2.Sdxe5#
- 1...Rxf4+
- 2.Sxf4#
- 1...d5+
- 2.Kd4#
- 1...gxf3
- 2.Qxf3#
- 1...d1Q
- 2.Qg2#
- 1...d1S
- 2.Sc1#
- 2.Qe1#
- 1...d1B
- 2.Sc1#
- 2.Qg2#
- 2.Qe1#
- 1...d1R
- 2.Qg2#
- 1...Rd5
- 2.Sc1#
- 1...c5
- 2.Kd5#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(d);CHECK::B(G)+S(C),XR(d)
- R(d);::B(G)+S(C),DCHECK
- R(d);N_GUARD::R(H)+K(D)
- R(g);CHECK,XP(E)::S(C),XR(g)
- P(a);SBLOCK::QAR2(A)
- P(a);N_GUARD::QAR1(A)
- P(c);N_GUARD::QAB1(A)
- P(e);::R(H)+K(D)
- P(f);CHECK,S_CUTR(d)::R(H)+K(D)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK::B(G)+S(C),XR(d)
- P(f);CHECK,S_CUTR(d)::R(H)+K(D)
- P(a);SBLOCK::QAR2(A)
- P(a);N_GUARD::QAR1(A)
- Refutation
- R(g);XS(F)
- Try
- B(G);XR(d)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,XP(E)::B(G)+S(C),DCHECK,XR(g)
- P(f);CHECK::R(H)+K(D)
- P(a);SBLOCK::QAR2(A)
- P(a);N_GUARD::QAR1(A)
- R(g);::B(G)+S(C),DCHECK
- R(g);P_PINR(H)::B(G)+S(C),DCHECK
- P(e);::R(H)+K(D)
- Refutation
- R(g);XB(I)
- Try
- Q(A);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- R(d);CHECK::B(G)+S(C),XR(d)
- R(g);CHECK,XP(E)::S(C),XR(g)
- P(f);CHECK,S_CUTR(d)::R(H)+K(D)
- P(c);OGATE,XS(F)::QAB1(A),XP(c)
- P(a);SBLOCK::QAR2(A)
- R(d);::B(G)+S(C),DCHECK
- P(e);::R(H)+K(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).