MESON Chess Problem Database
Problem Display
PID: 226337 (KR5b/8/8/k6r/8/5N2/8/5Q2 w - - 0 1)
Froberg, Johan Hilding Laurentius
Deutsche Schachzeitung, 1984
#2
4 + 3
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qb5#
- 1...Rh2
- 2.Qb5#
- 1...Rh3
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Re5
- 2.Qa1#
- 1...Rh6
- 2.Qb5#
- 1...Rh7
- 2.Qb5#
- 1...Ba1
- 2.Qxa1#
- 1...Be5
- 2.Qb5#
- 1...Rh1
- Tries
- 1.Sd4?
- threat
- 2.Qa1#
- 1...Ka4
- 2.Qa1#
- 1...Rb5
- 2.Qxb5#
- 1...Rh1
- 2.Qb5#
- 1...Rh2
- 2.Qb5#
- 1...Rh3
- 2.Qb5#
- 1...Bxd4!
- threat
- 1.Sg5?
- threat
- 2.Qb5#
- 1...Ka4
- 2.Qa6#
- 1...Rxg5!
- threat
- 1.Rb2?
- threat
- 2.Qa1#
- 1...Ka4
- 2.Qa1#
- 1...Rb5
- 2.Qxb5#
- 1...Rh1
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- 1...Bxb2!
- threat
- 1.Qe2?
- threat
- 2.Qa2#
- 1...Ka4
- 2.Qa2#
- 1...Rb5
- 2.Qxb5#
- 1...Rh2
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- 1...Bb2!
- threat
- 1.Qc4?
- threat
- 2.Qa2#
- 1...Rb5
- 2.Qxb5#
- 1...Rh2
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- 1...Bb2!
- threat
- 1.Qb1?
- threat
- 2.Qa2#
- 1...Ka4
- 2.Qa2#
- 2.Qb4#
- 1...Ka6
- 2.Qb6#
- 1...Rh2
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Bb2!
- threat
- 1.Qf2?
- threat
- 2.Qa7#
- 2.Qa2#
- 1...Ka4
- 2.Qa2#
- 1...Ka6
- 2.Qb6#
- 2.Qa7#
- 1...Rc5
- 2.Qa2#
- 1...Rh2
- 2.Qa7#
- 1...Rh4
- 2.Qa7#
- 1...Rh6
- 2.Qa2#
- 1...Rh7
- 2.Qa2#
- 1...Bb2
- 2.Qa7#
- 1...Bd4
- 2.Qa2#
- 1...Rb5!
- threat
- 1.Sd4?
- Keys
- 1.Se5!
- threat
- 2.Qb5#
- 2.Qa1#
- 1...Ka4
- 2.Qa6#
- 2.Qa1#
- 1...Rxe5
- 2.Qa1#
- 1...Bxe5
- 2.Qb5#
- 1...Rh1
- 2.Qb5#
- 1...Rh2
- 2.Qb5#
- 1...Rh3
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD,SBLOCK::QAR1(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);S_CUTB(c)::QAR(A)
- B(c);N_GUARD::QAR(A),XB(c)
- B(c);S_CUTR(b)::QAR1(A)
- Tries
- Try
- S(B);
- Threat
- QAR(A)
- Vars
- K(a);P-FLIGHT::QAR(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD,SBLOCK::QAR1(A)
- Refutation
- B(c);XS(B)
- Try
- S(B);
- Threat
- QAR1(A)
- Vars
- K(a);P-FLIGHT::QAR2(A)
- Refutation
- R(b);XS(B)
- Try
- R(D);
- Threat
- QAR(A)
- Vars
- K(a);P-FLIGHT::QAR(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);N_GUARD::QAR1(A)
- Refutation
- B(c);XR(D)
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- K(a);P-FLIGHT::QAR2(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);N_GUARD::QAR1(A)
- Refutation
- B(c);
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);N_GUARD::QAR1(A)
- Refutation
- B(c);
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- K(a);P-FLIGHT::QAR1(A)
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- Refutation
- B(c);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(a);P-FLIGHT::QAR2(A)
- R(b);::QAR(A)
- R(b);::QAR2(A)
- B(c);::QAR2(A)
- B(c);::QAR(A)
- Refutation
- R(b);
- Try
- Actual
- S(B);
- Threat
- DUALS(2)
- Vars
- R(b);XS(B)::QAR(A)
- B(c);XS(B)::QAR1(A)
- R(b);::QAR1(A)
- R(b);SBLOCK::QAR1(A)
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).