MESON Chess Problem Database
Problem Display
PID: 17009 (2b5/1p3N2/1P2pN2/B1k1pR2/3pQb2/3BP1p1/4n1K1/8 w - - 0 1)
Jorgensen, Walther Martinus Johannes
1st Prize, Magasinet, 1945
#2
9 + 9
| 15593 | 170 Skakopgaver (Jorgensen) | 1975 |
| 273 | Mat Plus | 1994 |
| 133 | The Problemist Supplement | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Bxe3
- 2.Rxe5#
- 1...Bg5
- 2.Rxe5#
- 1...Bh6
- 2.Rxe5#
- 1...Bd7
- 2.Sxd7#
- 1...Sc1
- 2.exd4#
- 1...Sg1
- 2.exd4#
- 1...Sc3
- 2.exd4#
- 1...dxe3
- 2.Qc4#
- 1...exf5
- 2.Qd5#
- 1...Bxe3
- Tries
- 1.Kf1?
- 1...Bxe3
- 2.Rxe5#
- 1...dxe3
- 2.Qc4#
- 1...exf5
- 2.Qd5#
- 1...Bg5
- 2.Rxe5#
- 1...Bh6
- 2.Rxe5#
- 1...Bd7
- 2.Sxd7#
- 1...Sc1
- 2.exd4#
- 1...Sg1
- 2.exd4#
- 1...Sc3
- 2.exd4#
- 1...g2+!
- 1...Bxe3
- 1.Kh1?
- 1...Bxe3
- 2.Rxe5#
- 1...dxe3
- 2.Qc4#
- 1...exf5
- 2.Qd5#
- 1...Bg5
- 2.Rxe5#
- 1...Bh6
- 2.Rxe5#
- 1...Bd7
- 2.Sxd7#
- 1...Sc1
- 2.exd4#
- 1...Sg1
- 2.exd4#
- 1...Sc3
- 2.exd4#
- 1...g2+!
- 1...Bxe3
- 1.Bxe2?
- threat
- 2.Qc2#
- 2.exd4#
- 1...Bxe3
- 2.Rxe5#
- 2.Qc2#
- 1...dxe3
- 2.Qc4#
- 1...exf5
- 2.Qc2#
- 2.Qd5#
- 1...d3!
- threat
- 1.Ba6?
- 1...Bxe3
- 2.Rxe5#
- 1...dxe3
- 2.Qc4#
- 1...exf5
- 2.Qd5#
- 1...Bd7
- 2.Sxd7#
- 1...Bg5
- 2.Rxe5#
- 1...Bh6
- 2.Rxe5#
- 1...Sc1
- 2.Qc2#
- 2.exd4#
- 1...Sg1
- 2.Qc2#
- 2.exd4#
- 1...Sc3
- 2.exd4#
- 1...d3
- 2.Qc4#
- 1...bxa6!
- 1...Bxe3
- 1.Rg5?
- 1...Bxe3
- 2.Rxe5#
- 1...dxe3
- 2.Qc4#
- 1...Bd7
- 2.Sxd7#
- 1...Sc1
- 2.exd4#
- 1...Sg1
- 2.exd4#
- 1...Sc3
- 2.exd4#
- 1...Bxg5!
- 1...Bxe3
- 1.Rh5?
- 1...Bxe3
- 2.Rxe5#
- 1...dxe3
- 2.Qc4#
- 1...Bd7
- 2.Sxd7#
- 1...Bh6
- 2.Rxe5#
- 1...Sc1
- 2.exd4#
- 1...Sg1
- 2.exd4#
- 1...Sc3
- 2.exd4#
- 1...Bg5!
- 1...Bxe3
- 1.Qxd4+?
- 1...Kc6
- 2.Sd8#
- 2.Qc4#
- 2.Qd6#
- 1...Sxd4!
- 1...Kc6
- 1.Qxe5+?
- 1...Kc6
- 2.Sd8#
- 2.Be4#
- 2.Bb5#
- 2.Qe4#
- 2.Qb5#
- 2.Qc5#
- 1...Bxe5!
- 1...Kc6
- 1.Kf1?
- Keys
- 1.Sd8!
- 1...Kd6
- 2.Bb4#
- 1...Bxe3
- 2.Qxe5#
- 1...dxe3
- 2.Qb4#
- 1...exf5
- 2.Qd5#
- 1...Bd7
- 2.Sxb7#
- 1...Bg5
- 2.Qxe5#
- 1...Bh6
- 2.Qxe5#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Kd6
- 1.Sd8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD,XP(C)::R(F),XP(f)
- B(d);N_GUARD::R(F),XP(f)
- B(i);N_GUARD::S(H),XB(i)
- S(a);N_GUARD::P(C),XP(c)
- P(c);OGATE,XP(C)::QAR1(D)
- P(g);N_GUARD,N_SPINP(f),XR(F)::QAR1(D)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- B(d);N_GUARD,XP(C)::R(F),XP(f)
- P(c);OGATE,XP(C)::QAR1(D)
- P(g);N_GUARD,N_SPINP(f),XR(F)::QAR1(D)
- B(d);N_GUARD::R(F),XP(f)
- B(i);N_GUARD::S(H),XB(i)
- S(a);N_GUARD::P(C),XP(c)
- Refutation
- P(b);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- B(d);N_GUARD,XP(C)::R(F),XP(f)
- P(c);OGATE,XP(C)::QAR1(D)
- P(g);N_GUARD,N_SPINP(f),XR(F)::QAR1(D)
- B(d);N_GUARD::R(F),XP(f)
- B(i);N_GUARD::S(H),XB(i)
- S(a);N_GUARD::P(C),XP(c)
- Refutation
- P(b);CHECK
- Try
- B(B);XS(a)
- Threat
- DUALS(2)
- Vars
- P(c);OGATE,XP(C)::QAR1(D)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- B(d);N_GUARD,XP(C)::R(F),XP(f)
- P(c);OGATE,XP(C)::QAR1(D)
- P(g);N_GUARD,N_SPINP(f),XR(F)::QAR1(D)
- B(i);N_GUARD::S(H),XB(i)
- B(d);N_GUARD::R(F),XP(f)
- S(a);N_GUARD::P(C),XP(c)
- P(c);OGATE::QAR1(D)
- Refutation
- P(h);XB(B)
- Try
- R(F);
- Vars
- B(d);N_GUARD,XP(C)::R(F),XP(f)
- P(c);OGATE,XP(C)::QAR1(D)
- B(i);N_GUARD::S(H),XB(i)
- S(a);N_GUARD::P(C),XP(c)
- Refutation
- B(d);N_SPINP(f),XR(F)
- Try
- R(F);
- Vars
- B(d);N_GUARD,XP(C)::R(F),XP(f)
- P(c);OGATE,XP(C)::QAR1(D)
- B(i);N_GUARD::S(H),XB(i)
- B(d);N_GUARD::R(F),XP(f)
- S(a);N_GUARD::P(C),XP(c)
- Refutation
- B(d);N_SPINP(f)
- Try
- Q(D);CHECK,XP(c)
- Refutation
- S(a);XQ(D)
- Try
- Q(D);CHECK,XP(f)
- Refutation
- B(d);P_SPINB(d),XQ(D)
- Try
- Actual
- S(I);
- Vars
- K(e);N_SPINP(f),S_FLIGHT::B(E)
- B(d);N_GUARD,XP(C)::QAR2(D),XP(f)
- P(c);OGATE,XP(C)::QAB1(D)
- P(g);N_GUARD,N_SPINP(f),XR(F)::QAR1(D)
- B(i);N_GUARD::S(I),XP(h)
- B(d);N_GUARD::QAR2(D),XP(f)
- S(a);N_GUARD::QAB1(D),XP(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).