MESON Chess Problem Database
Problem Display
PID: 226838 (8/1N3B1b/4R3/B2R4/pP3r2/Nkp2r2/1P2p3/K1Q3b1 w - - 0 1)
Jonsson, Christer
Tidskrift for Schack, 1978
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Rf2
- 2.Sc5#
- 2.Qxc3#
- 1...Rd3
- 2.Qc2#
- 1...Re3
- 2.Sc5#
- 1...Rd4
- 2.Sc5#
- 1...Re4
- 2.Qc2#
- 1...Rf5
- 2.Qc2#
- 1...Bh2
- 2.Sc5#
- 1...Be3
- 2.Qxc3#
- 1...Bc5
- 2.Sxc5#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.Qxc3#
- 1...Bg8
- 2.Qc2#
- 1...cxb2+
- 2.Qxb2#
- 1...Rf2
- Tries
- 1.Rf5?
- threat
- 2.Re4#
- 2.Qc2#
- 1...cxb2+
- 2.Qxb2#
- 1...Rxb4
- 2.Rb6#
- 2.Qc2#
- 1...Rxf5
- 2.Qc2#
- 1...e1Q
- 2.Re4#
- 1...e1S
- 2.Re4#
- 1...e1R
- 2.Re4#
- 1...Rf1
- 2.Re4#
- 1...Rd3
- 2.Qc2#
- 1...Rc4
- 2.Qc2#
- 1...Rd4
- 2.Sc5#
- 2.Qc2#
- 1...Re4
- 2.Rxe4#
- 2.Qc2#
- 1...Bg6
- 2.Qc2#
- 1...Bg8
- 2.Qc2#
- 1...c2
- 2.Re3#
- 2.Re4#
- 2.Qxc2#
- 1...Bxf5!
- threat
- 1.Re3?
- threat
- 2.Sc5#
- 2.Qxc3#
- 1...Rxe3
- 2.Sc5#
- 1...Bxe3
- 2.Qxc3#
- 1...e1Q
- 2.Sc5#
- 1...e1B
- 2.Sc5#
- 1...e1R
- 2.Sc5#
- 1...Rf1
- 2.Sc5#
- 2.Rxc3#
- 1...Bc2
- 2.Sc5#
- 2.Qxc2#
- 1...Rc4!
- threat
- 1.Re4?
- threat
- 2.Rf5#
- 2.Qc2#
- 1...cxb2+
- 2.Qxb2#
- 1...Rxe4
- 2.Qc2#
- 1...Rxf7
- 2.Qc2#
- 1...e1Q
- 2.Rf5#
- 1...e1S
- 2.Rf5#
- 1...e1R
- 2.Rf5#
- 1...Rf1
- 2.Rf5#
- 1...Rd3
- 2.Qc2#
- 1...Rf5
- 2.Rxf5#
- 2.Qc2#
- 1...Rf6
- 2.Qc2#
- 1...Bf5
- 2.Rxf5#
- 2.Qc2#
- 1...Bg6
- 2.Qc2#
- 1...Bg8
- 2.Qc2#
- 1...c2
- 2.Rd3#
- 2.Rf5#
- 2.Qxc2#
- 1...Bxe4!
- threat
- 1.Rf5?
- Keys
- 1.Rd4!
- threat
- 2.Sc5#
- 2.Rf6#
- 1...cxb2+
- 2.Qxb2#
- 1...Rxd4
- 2.Sc5#
- 1...Rxf7
- 2.Sc5#
- 1...Bxd4
- 2.Rf6#
- 1...e1Q
- 2.Sc5#
- 1...e1R
- 2.Sc5#
- 1...Re3
- 2.Sc5#
- 1...Re4
- 2.Sc5#
- 2.Qc2#
- 1...Rf5
- 2.Qc2#
- 1...Rf6
- 2.Sc5#
- 2.Rxf6#
- 1...Bd3
- 2.Sc5#
- 2.Qxc3#
- 1...Be4
- 2.Sc5#
- 1...Bf5
- 2.Sc5#
- 1...Bg6
- 2.Sc5#
- 1...Bg8
- 2.Sc5#
- 2.Qc2#
- threat
- 1.Rd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- R(e);S_CUTB(h)::QAB1(B)
- R(e);S_CUTB(a)::S(I)
- R(g);S_CUTB(a)::S(I)
- R(g);S_CUTB(h)::QAB1(B)
- B(a);N_GUARD::S(I)
- B(a);S_CUTR(e)::QAR1(B),XP(d)
- B(a);N_GUARD::S(I),XB(a)
- B(h);N_GUARD::QAB1(B),XB(h)
- B(h);S_CUTR(e)::QAR1(B),XP(d)
- B(h);N_GUARD::QAB1(B)
- P(d);CHECK,OGATE,XP(C)::QAR1(B),XP(d)
- Tries
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,OGATE,XP(C)::QAR1(B),XP(d)
- R(g);XR(G)::QAB1(B)
- P(b);P_PINQ(B)::B(J)+R(H)
- P(b);::B(J)+R(H)
- R(e);P_PINQ(B)::B(J)+R(H)
- R(e);::QAB1(B)
- R(g);::QAB1(B)
- B(h);::QAB1(B)
- Refutation
- B(h);XR(G)
- Try
- R(H);P_PINP(d)
- Threat
- DUALS(2)
- Vars
- R(e);N_SPINP(d),XR(H)::S(I)
- B(a);N_SPINP(d),XR(H)::QAR1(B),XP(d)
- P(b);P_PINQ(B)::S(I)
- P(b);::S(I)
- Refutation
- R(g);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,OGATE,XP(C)::QAR1(B),XP(d)
- R(g);XR(H)::QAB1(B)
- R(g);XB(J)::QAB1(B)
- P(b);P_PINQ(B)::B(J)+R(G)
- P(b);::B(J)+R(G)
- R(e);P_PINQ(B)::B(J)+R(G)
- R(e);::QAB1(B)
- R(g);::QAB1(B)
- B(h);::QAB1(B)
- Refutation
- B(h);XR(H)
- Try
- Actual
- R(G);
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,OGATE,XP(C)::QAR1(B),XP(d)
- R(g);XR(G)::S(I)
- R(g);XB(J)::S(I)
- B(a);XR(G)::B(J)+R(H)
- P(b);P_PINQ(B)::S(I)
- R(e);::S(I)
- R(g);S_CUTB(h)::QAB1(B)
- B(h);::S(I)
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).