MESON Chess Problem Database
Problem Display
PID: 115729 (1K4Qb/1p2N3/1r2p3/2P1k1P1/1R3p1q/1NPp1bPB/5Pp1/B3r1R1 w - - 0 1)
Eriksson, Finn Olof
HM., Schacksallskaps, 1935
#2
13 + 11
| 6490 | yacpdb | 2009 |
| 56 | The Problemist | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Qxg3
- 2.Qxh8#
- 1...Qxg5
- 2.Qxg5#
- 1...Qxh3
- 2.gxf4#
- 1...Qg4
- 2.Qxh8#
- 1...Qh5
- 2.gxf4#
- 1...Qh6
- 2.gxf4#
- 1...Qh7
- 2.gxf4#
- 1...Rxb4
- 2.Qxe6#
- 1...Rb5
- 2.Qxe6#
- 1...Bg4
- 2.gxf4#
- 1...Bd5
- 2.Sg6#
- 1...Bh5
- 2.Qxh8#
- 1...Bc6
- 2.Qxe6#
- 1...Bg7
- 2.Qxg7#
- 1...Qxg3
- Tries
- 1.Rxe1+?
- 1...Be4
- 2.Rexe4#
- 2.Rbxe4#
- 2.c4#
- 1...Be2!
- 1...Be4
- 1.Rd4?
- threat
- 2.Sg6#
- 1...Qxg5
- 2.Qxg5#
- 1...Qxh3
- 2.gxf4#
- 1...Qg4
- 2.Qxh8#
- 1...Qh5
- 2.gxf4#
- 1...Qh6
- 2.gxf4#
- 1...Qh7
- 2.gxf4#
- 1...Bg4
- 2.gxf4#
- 1...Bh5
- 2.Qxh8#
- 1...Be4!
- threat
- 1.Qd8?
- threat
- 2.Sg6#
- 2.Qd4#
- 1...Qxg5
- 2.Qd4#
- 1...Qxh3
- 2.Qd4#
- 2.gxf4#
- 1...fxg3
- 2.Sg6#
- 1...Qg4
- 2.Qd4#
- 2.Qxh8#
- 1...Qh5
- 2.Qd4#
- 2.gxf4#
- 1...Qh6
- 2.Qd4#
- 2.gxf4#
- 1...Qh7
- 2.Qd4#
- 2.gxf4#
- 1...Re4
- 2.Sg6#
- 1...Rd6
- 2.Qxd6#
- 1...Be4
- 2.Qd4#
- 1...Bg4
- 2.Qd4#
- 2.gxf4#
- 1...Bd5
- 2.Sg6#
- 1...Bh5
- 2.Qd4#
- 2.Qxh8#
- 1...Rxb4!
- threat
- 1.c4+?
- 1...Ke4
- 2.Sd2#
- 2.Qg6#
- 1...Rxa1!
- 1...Ke4
- 1.gxh4?
- threat
- 2.Qxh8#
- 1...Rxb4
- 2.Qxe6#
- 1...Bg7
- 2.Qxg7#
- 1...Bf6!
- threat
- 1.Rxe1+?
- Keys
- 1.Sd2!
- threat
- 2.Sxf3#
- 1...Qxg3
- 2.Qxh8#
- 1...Qxg5
- 2.Qxg5#
- 1...Rxb4
- 2.Qxe6#
- 1...Qg4
- 2.Qxh8#
- 1...Qh5
- 2.gxf4#
- 1...Re3
- 2.c4#
- 1...Bd1
- 2.c4#
- 1...Be2
- 2.Re4#
- 1...Be4
- 2.Sc4#
- 1...Bg4
- 2.gxf4#
- 1...Bd5
- 2.Sg6#
- 1...Bh5
- 2.Qxh8#
- 1...Bc6
- 2.Qxe6#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(f);N_GUARD,XP(F)::QAB(M),XB(k)
- Q(f);OGATE,XP(J)::QAR2(M),XQ(f)
- Q(f);N_GUARD,XB(G)::P(F),XP(e)
- Q(f);N_GUARD::QAB(M),XB(k)
- Q(f);N_GUARD::P(F),XP(e)
- R(h);N_GUARD,XR(H)::QAR1(M),XP(i)
- R(h);N_GUARD::QAR1(M),XP(i)
- B(d);S_CUTQ(f)::P(F),XP(e)
- B(d);SBLOCK::S(K)
- B(d);S_CUTQ(f)::QAB(M),XB(k)
- B(d);S_CUTR(h)::QAR1(M),XP(i)
- B(k);N_GUARD::QAB(M),XB(k)
- Tries
- Try
- R(B);CHECK,XR(a)
- Refutation
- B(d);P_SPINB(d)
- Try
- R(H);
- Threat
- S(K)
- Vars
- Q(f);OGATE,XP(J)::QAR2(M),XQ(f)
- Q(f);N_GUARD,XB(G)::P(F),XP(e)
- Q(f);N_GUARD::QAB(M),XB(k)
- Q(f);N_GUARD::P(F),XP(e)
- B(d);S_CUTQ(f)::P(F),XP(e)
- B(d);S_CUTQ(f)::QAB(M),XB(k)
- Refutation
- B(d);
- Try
- Q(M);
- Threat
- DUALS(2)
- Vars
- Q(f);XP(J)::QAB1(M)
- P(e);XP(F)::S(K)
- R(a);::S(K)
- R(h);N_GUARD::QAB1(M),XR(h)
- B(d);::QAB1(M)
- B(d);::S(K)
- Refutation
- R(h);XR(H)
- Try
- P(E);CHECK
- Refutation
- R(a);XB(A)
- Try
- P(F);XQ(f)
- Threat
- QAB(M),XB(k)
- Vars
- R(h);N_GUARD,XR(H)::QAR1(M),XP(i)
- B(k);N_GUARD::QAB(M),XB(k)
- Refutation
- B(k);
- Try
- Actual
- S(D);
- Threat
- S(D),XB(d)
- Vars
- Q(f);N_GUARD,XP(F)::QAB(M),XB(k)
- Q(f);OGATE,XP(J)::QAR2(M),XQ(f)
- R(h);N_GUARD,XR(H)::QAR1(M),XP(i)
- Q(f);N_GUARD::QAB(M),XB(k)
- Q(f);N_GUARD::P(F),XP(e)
- R(a);N_GUARD::B(A)+P(E)
- B(d);S_CUTR(a)::B(A)+P(E)
- B(d);N_GUARD,S_CUTR(a)::R1(H)
- B(d);SBLOCK::S(D)
- B(d);S_CUTQ(f)::P(F),XP(e)
- B(d);SBLOCK::S(K)
- B(d);S_CUTQ(f)::QAB(M),XB(k)
- B(d);S_CUTR(h)::QAR1(M),XP(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).