MESON Chess Problem Database
Problem Display
PID: 6890 (1b1QK2B/1p4Np/p1P2Rpr/R1N1k3/6P1/1n1P4/BqPP3n/4r3 w - - 0 1)
Rindoien, Ragnar
Norsk Sjakkblad, 1934
#2
13 + 11
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Sd7#
- 1...Bd6
- 2.Qxd6#
- 1...Ba7
- 2.Qd6#
- 1...Sd4
- 2.Sd7#
- 1...Sxc5
- 2.Rxc5#
- 1...g5
- 2.Rf5#
- 1...Qd4
- Tries
- 1.Se4+?
- 1...Sxa5
- 2.Qd5#
- 1...Sc5
- 2.Rxc5#
- 2.Qd5#
- 1...b5!
- 1...Sxa5
- 1.Sxb7+?
- 1...Sc5
- 2.Rxc5#
- 1...Sxa5!
- 1...Sc5
- 1.Sh5?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rd6#
- 2.Re6#
- 2.Rxg6#
- 2.Rf7#
- 2.Rf8#
- 1...Rxh5
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf5#
- 2.Rf7#
- 2.Rf8#
- 1...gxh5
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 2.Rxd6#
- 2.Qxd6#
- 1...Rf1
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Re6#
- 1...Sf1
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rd6#
- 2.Re6#
- 2.Rxg6#
- 2.Rf7#
- 2.Rf8#
- 1...Sf3
- 2.Rxf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rd6#
- 2.Re6#
- 2.Rxg6#
- 2.Rf7#
- 2.Rf8#
- 1...g5
- 2.Rf5#
- 2.Re6#
- 2.Rg6#
- 2.Rxh6#
- 1...Sxg4!
- threat
- 1.Sge6?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rxg6#
- 2.Rf7#
- 2.Rf8#
- 1...Bd6
- 2.Sd7#
- 2.Rf5#
- 1...Rf1
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 1...Sf1
- 2.Rxf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rxg6#
- 2.Rf7#
- 2.Rf8#
- 1...Sf3
- 2.Rxf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rxg6#
- 2.Rf7#
- 2.Rf8#
- 1...g5
- 2.Rf5#
- 2.Rg6#
- 2.Rxh6#
- 1...Sxg4!
- threat
- 1.Qd4+?
- 1...Qxd4
- 2.Sd7#
- 1...Sxd4
- 2.Sd7#
- 1...Kxd4+!
- 1...Qxd4
- 1.Qd5+?
- 1...Kxf6+
- 2.Sge6#
- 1...Kxd5+!
- 1...Kxf6+
- 1.c7?
- threat
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qxa2
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qxc2
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxg4
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxd2
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxa5
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sxc5
- 2.Rxc5#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...b5
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qa1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qc1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qa3
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qc3
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Qd4
- 2.Sd7#
- 1...Qb1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Ra1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rb1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rd1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rf1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rg1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rh1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re2
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re3
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Re4
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rh3
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rh4
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rh5
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Ba7
- 2.Qd6#
- 1...Sf1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sf3
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sa1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sc1
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sd4
- 2.Sd7#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...g5
- 2.Rf5#
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...b6
- 2.Qd6#
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxc7!
- threat
- 1.Se4+?
- Keys
- 1.Qb6!
- threat
- 2.Sd7#
- 1...Kd4+
- 2.Sce6#
- 1...Kd5+
- 2.Se4#
- 1...Kxf6+
- 2.Sge6#
- 1...Sxc5
- 2.Qxb2#
- threat
- 1.Qb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(b);SBLOCK::R(F)+S(G),DCHECK
- B(k);N_GUARD::QAB1(K),XB(k)
- B(k);N_GUARD::QAB1(K)
- S(d);SBLOCK::R(F)+S(G),DCHECK
- S(d);OGATE,P_SPINS(d),XS(G)::R(F),XS(d)
- P(g);N_GUARD::R1(I)
- Tries
- Try
- S(G);CHECK
- Vars
- S(d);XR(F)::QAR1(K)
- Refutation
- P(i);P_SPINP(i)
- Try
- S(G);CHECK,XP(i)
- Vars
- S(d);N_GUARD,P_SPINS(d)::R(F),XS(d)
- Refutation
- S(d);XR(F)
- Try
- S(J);
- Threat
- DUALS(10)
- Vars
- P(g);XS(J)::B(M)+R(I),DCHECK
- Refutation
- S(c);XP(E)
- Try
- S(J);
- Threat
- DUALS(8)
- Refutation
- S(c);XP(E)
- Try
- Q(K);CHECK
- Vars
- Q(b);SBLOCK,XQ(K)::R(F)+S(G),DCHECK
- S(d);SBLOCK,XQ(K)::R(F)+S(G),DCHECK
- Refutation
- K(e);CHECK,S_FLIGHT,XQ(K)
- Try
- Q(K);CHECK
- Vars
- K(e);CHECK,S_FLIGHT,XR(I)::B(M)+S(J)
- Refutation
- K(e);CHECK,P-FLIGHT,P_SPINS(d),XQ(K)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- Q(b);SBLOCK::R(F)+S(G),DCHECK
- B(k);::QAB1(K)
- Refutation
- B(k);XP(H)
- Try
- Actual
- Q(K);
- Threat
- R(F)+S(G),DCHECK
- Vars
- K(e);CHECK,S_FLIGHT::QAB(K)+S(G),DCHECK
- K(e);CHECK,P-FLIGHT,P_SPINS(d)::R(F)+S(G)
- K(e);CHECK,S_FLIGHT,XR(I)::B(M)+S(J)
- S(d);OGATE,P_SPINS(d),XS(G)::QAB(K),XQ(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).