MESON Chess Problem Database
Problem Display
PID: 92676 (5B2/6pr/2pQ2p1/p2p2P1/1p1kP3/1RpP4/4PKP1/8 w - - 0 1)
Coppens, JP
Tijdschrift vd KNSB, 1930
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Bxg7#
- 1...Rh2
- 2.Bxg7#
- 1...Rh3
- 2.Bxg7#
- 1...Rh4
- 2.Bxg7#
- 1...Rh5
- 2.Bxg7#
- 1...Rh6
- 2.Bxg7#
- 1...Rh8
- 2.Bxg7#
- 1...c2
- 2.e3#
- 1...a4
- 2.Rxb4#
- 1...c5
- 2.Qxd5#
- 1...Rh1
- Tries
- 1.Kf3?
- 1...Rh1
- 2.Bxg7#
- 1...Rh2
- 2.Bxg7#
- 1...Rh4
- 2.Bxg7#
- 1...Rh5
- 2.Bxg7#
- 1...Rh6
- 2.Bxg7#
- 1...Rh8
- 2.Bxg7#
- 1...c2
- 2.e3#
- 1...a4
- 2.Rxb4#
- 1...c5
- 2.Qxd5#
- 1...Rh3+!
- 1...Rh1
- 1.Qf4?
- threat
- 2.e5#
- 1...dxe4
- 2.Qd6#
- 2.Qxe4#
- 1...Rh4!
- threat
- 1.Qe7?
- 1...dxe4
- 2.Qc5#
- 2.Qd6#
- 2.Qxe4#
- 1...Rh1
- 2.Bxg7#
- 2.Qxg7#
- 1...Rh2
- 2.Bxg7#
- 2.Qxg7#
- 1...Rh3
- 2.Bxg7#
- 2.Qxg7#
- 1...Rh4
- 2.Bxg7#
- 2.Qxg7#
- 1...Rh5
- 2.Bxg7#
- 2.Qxg7#
- 1...Rh6
- 2.Bxg7#
- 2.Qxg7#
- 1...Rh8
- 2.Bxg7#
- 2.Qxg7#
- 1...c2
- 2.e3#
- 1...a4
- 2.Rxb4#
- 1...c5!
- 1...dxe4
- 1.Qxc6?
- threat
- 2.Qxd5#
- 1...dxe4
- 2.Qxe4#
- 2.Qc5#
- 2.Qd6#
- 1...Ke5!
- threat
- 1.g3?
- 1...Rh1
- 2.Bxg7#
- 1...Rh3
- 2.Bxg7#
- 1...Rh4
- 2.Bxg7#
- 1...Rh5
- 2.Bxg7#
- 1...Rh6
- 2.Bxg7#
- 1...Rh8
- 2.Bxg7#
- 1...c2
- 2.e3#
- 1...a4
- 2.Rxb4#
- 1...c5
- 2.Qxd5#
- 1...Rh2+!
- 1...Rh1
- 1.g4?
- 1...Rh1
- 2.Bxg7#
- 1...Rh3
- 2.Bxg7#
- 1...Rh4
- 2.Bxg7#
- 1...Rh5
- 2.Bxg7#
- 1...Rh6
- 2.Bxg7#
- 1...Rh8
- 2.Bxg7#
- 1...c2
- 2.e3#
- 1...a4
- 2.Rxb4#
- 1...c5
- 2.Qxd5#
- 1...Rh2+!
- 1...Rh1
- 1.exd5?
- threat
- 2.dxc6#
- 1...cxd5
- 2.Qf4#
- 1...c5!
- threat
- 1.Kf3?
- Keys
- 1.Qc7!
- 1...dxe4
- 2.Qd6#
- 1...Rh1
- 2.Qxg7#
- 1...Rh2
- 2.Qxg7#
- 1...Rh3
- 2.Qxg7#
- 1...Rh4
- 2.Qxg7#
- 1...Rh5
- 2.Qxg7#
- 1...Rh6
- 2.Qxg7#
- 1...Rh8
- 2.Qxg7#
- 1...c2
- 2.e3#
- 1...a4
- 2.Rxb4#
- 1...c5
- 2.Bxc5#
- 1...dxe4
- 1.Qc7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD::B(I),XP(h)
- R(i);N_GUARD,P_PINP(C)::B(I),XP(h)
- P(a);::P(A)
- P(d);N_GUARD::R(D),XP(b)
- P(f);N_GUARD::QAR1(H),XP(e)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(i);N_GUARD::B(I),XP(h)
- P(a);::P(A)
- P(d);N_GUARD::R(D),XP(b)
- P(f);N_GUARD::QAR1(H),XP(e)
- Refutation
- R(i);CHECK
- Try
- Q(H);N_PINP(e)
- Threat
- QAR(H)+P(F)
- Refutation
- R(i);
- Try
- Q(H);N_PINP(e)
- Vars
- P(a);::P(A)
- P(d);N_GUARD::R(D),XP(b)
- Refutation
- P(f);
- Try
- Q(H);N_PINP(e),XP(f)
- Threat
- QAR1(H),XP(e)
- Refutation
- K(c);S_FLIGHT
- Try
- P(C);
- Vars
- R(i);N_GUARD::B(I),XP(h)
- P(a);::P(A)
- P(d);N_GUARD::R(D),XP(b)
- P(f);N_GUARD::QAR1(H),XP(e)
- Refutation
- R(i);CHECK
- Try
- P(C);
- Vars
- R(i);N_GUARD::B(I),XP(h)
- P(a);::P(A)
- P(d);N_GUARD::R(D),XP(b)
- P(f);N_GUARD::QAR1(H),XP(e)
- Refutation
- R(i);CHECK
- Try
- P(F);XP(e)
- Threat
- QAR(H)+P(F),XP(f)
- Vars
- P(f);P_SPINP(f),SBLOCK,XP(F)::QAR2(H)
- Refutation
- P(f);
- Try
- Actual
- Q(H);N_PINP(e)
- Vars
- P(e);OGATEB,XP(F)::QAR2(H)
- R(i);N_GUARD::QAB(H),XP(h)
- R(i);N_GUARD,P_PINP(C)::QAB(H),XP(h)
- P(a);::P(A)
- P(d);N_GUARD::R(D),XP(b)
- P(f);::B(I),XP(f)
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).