MESON Chess Problem Database
Problem Display
PID: 110768 (8/8/2N5/1R1p1p2/2pP1K2/pPk5/4Q3/2B2n2 w - - 0 1)
Knoppel, Jan Heribert
Springaren, 1951
#2
7 + 6
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...cxb3
- 2.Rc5#
- 1...Sd2
- Tries
- 1.Ke5?
- 1...cxb3
- 2.Rc5#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...f4!
- 1...cxb3
- 1.Kg5?
- 1...cxb3
- 2.Rc5#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...f4!
- 1...cxb3
- 1.Se5?
- 1...cxb3
- 2.Qd3#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 2.Qb2#
- 1...Kxd4!
- 1...cxb3
- 1.Rb4?
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...cxb3!
- 1...Sd2
- 1.Rb6?
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...cxb3!
- 1...Sd2
- 1.Rb7?
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...cxb3!
- 1...Sd2
- 1.Rb8?
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2
- 2.Bb2#
- 1...cxb3!
- 1...Sd2
- 1.Qd1?
- 1...cxb3
- 2.Rc5#
- 2.Qxb3#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...a2!
- 1...cxb3
- 1.Qa2?
- 1...cxb3
- 2.Qxb3#
- 1...Sd2
- 2.Qxd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sg3
- 2.Qd2#
- 1...Kd3!
- 1...cxb3
- 1.Qb2+?
- 1...Kd3
- 2.Sb4#
- 2.Se5#
- 1...axb2!
- 1...Kd3
- 1.Ke5?
- Keys
- 1.Sb4!
- 1...Kxb3
- 2.Qc2#
- 1...Kxd4
- 2.Qe5#
- 1...cxb3
- 2.Qd3#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 1...a2
- 2.Qb2#
- 1...Kxb3
- 1.Sb4!
Anticipated by 6856(1934)
This is after
After T. Czarnecki.
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- P(d);OGATEB,SBLOCK,XP(C)::R(F)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- P(d);OGATEB,SBLOCK,XP(C)::R(F)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- K(E);S_FLIGHT
- Vars
- P(d);OGATEB,SBLOCK,XP(C)::R(F)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- Refutation
- P(f);
- Try
- S(G);
- Vars
- P(d);N_GUARD,XP(C)::QAR1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- K(c);S_FLIGHT,XP(D)
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- Refutation
- P(d);XP(C)
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- Refutation
- P(d);XP(C)
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- Refutation
- P(d);XP(C)
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- P(b);N_GUARD::B(A)
- Refutation
- P(d);XP(C)
- Try
- Q(B);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- P(b);
- Try
- Q(B);
- Vars
- P(d);OGATE,XP(C)::QAR1(B),XP(d)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(B);CHECK
- Refutation
- P(b);XQ(B)
- Try
- Actual
- S(G);
- Vars
- K(c);P-FLIGHT,XP(C)::QAB1(B)
- K(c);OGATEB,S_FLIGHT,XP(D)::QAB1(B)
- P(d);N_GUARD,SBLOCK,XP(C)::QAR1(B)
- S(a);N_GUARD::QAR2(B)
- S(a);N_GUARD::QAR2(B),XS(a)
- P(b);N_GUARD::QAB1(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).