MESON Chess Problem Database
Problem Display
PID: 161514 (b7/q2p4/pR2PN2/2rpk2r/1QP1N2B/2P2RPB/5P2/5n1K w - - 0 1)
Jorgensen, Walther Martinus Johannes
4th Prize, Problemschack, 1953
#2
13 + 9
| 15593 | 170 Skakopgaver (Jorgensen) | 1975 |
| 133 | The Problemist Supplement | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rxc4
- 2.Qd6#
- 1...Ra5
- 2.Qd6#
- 1...Rb5
- 2.Qd6#
- 1...Rc7
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Rxh4
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Rh6
- 2.Rf5#
- 1...Rh7
- 2.Rf5#
- 1...Rh8
- 2.Rf5#
- 1...Sxg3+
- 2.Bxg3#
- 1...dxe4
- 2.Sg4#
- 1...dxe6
- 2.Rxe6#
- 1...Rxc4
- Tries
- 1.Sxc5?
- threat
- 2.Sd3#
- 2.Sg4#
- 1...Sxg3+
- 2.Bxg3#
- 1...Qxb6
- 2.Sd3#
- 2.Scxd7#
- 1...Rxh4
- 2.Sd3#
- 2.Rf5#
- 1...Bc6
- 2.Sd3#
- 1...Rg5
- 2.Sd3#
- 1...Sh2
- 2.Sd3#
- 2.Re3#
- 1...Se3
- 2.Sd3#
- 2.Rxe3#
- 1...dxc4!
- threat
- 1.Sg5?
- threat
- 2.Sf7#
- 2.Sg4#
- 2.Rf5#
- 1...Sxg3+
- 2.Bxg3#
- 1...Qxb6
- 2.Sf7#
- 1...Rxc4
- 2.Sf7#
- 2.Rf5#
- 2.Qd6#
- 1...Rxh4
- 2.Sf7#
- 2.Rf5#
- 1...dxc4
- 2.Sf7#
- 1...dxe6
- 2.Sg4#
- 2.Rxe6#
- 1...Bc6
- 2.Sf7#
- 1...Rh7
- 2.Sg4#
- 2.Rf5#
- 1...Sh2
- 2.Sf7#
- 2.Rf5#
- 1...Se3
- 2.Sf7#
- 1...d4
- 2.Sf7#
- 2.Sg4#
- 1...d6
- 2.Sg4#
- 2.Rf5#
- 1...Rxg5!
- threat
- 1.Sd6?
- threat
- 2.Sf7#
- 1...Sxg3+
- 2.Bxg3#
- 1...dxe6
- 2.Sg4#
- 1...Rh7!
- threat
- 1.Re3?
- threat
- 2.f4#
- 1...Sxg3+
- 2.Bxg3#
- 1...Rf5
- 2.Sg4#
- 1...Rxh4!
- threat
- 1.Qxc5?
- threat
- 2.Qd4#
- 2.Qd6#
- 1...Sxg3+
- 2.Bxg3#
- 1...Qb8
- 2.Qd4#
- 1...Qc7
- 2.Qd4#
- 1...d6
- 2.Qd4#
- 2.Qxd6#
- 1...Qxb6!
- threat
- 1.Sxc5?
- Keys
- 1.cxd5!
- threat
- 2.Qd4#
- 1...Sxg3+
- 2.Bxg3#
- 1...Rxc3
- 2.Qxc3#
- 1...Rxd5
- 2.Sg4#
- 1...Rc4
- 2.Qd6#
- threat
- 1.cxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- R(b);OGATE,XP(H)::QAB1(G)
- R(b);OGATE::QAB1(G)
- R(e);N_GUARD,P_PINB(F),XB(J)::R1(D)
- R(e);N_GUARD::R1(D),XR(e)
- R(e);N_GUARD::R1(D)
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- P(c);SBLOCK,XS(I)::S(M)
- P(h);OGATE,XP(L)::R1(K),XP(h)
- Tries
- Try
- S(I);XR(b)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- B(i);::S(I)
- R(e);::S(I)
- Refutation
- P(c);P_PINR(D),XP(H)
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- Q(g);XR(K)::S(I)
- P(c);P_PINR(D),XP(H)::S(I)
- B(i);::S(I)
- S(a);::S(I)
- Refutation
- R(e);XS(I)
- Try
- S(I);
- Threat
- S(I)
- Vars
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- P(h);SBLOCK,XP(L)::S(M)
- Refutation
- R(e);
- Try
- R(D);
- Threat
- P(B)
- Vars
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- R(e);SBLOCK::S(M)
- Refutation
- R(e);P_PINB(F),XB(J)
- Try
- Q(G);P_PINP(c),XR(b)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- Q(g);::QAB1(G)
- Refutation
- Q(g);XR(K)
- Try
- Actual
- P(H);XP(c)
- Threat
- QAB1(G)
- Vars
- S(a);CHECK,OGATE,XP(E)::B(J),XS(a)
- R(b);OGATE,XP(C)::QAB(G),XR(b)
- R(b);SBLOCK,XP(H)::S(M)
- R(b);OGATE::QAB1(G)
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).