MESON Chess Problem Database
Problem Display
PID: 55840 (2r2b2/Nr6/2p2Rb1/R4p2/3k1P1q/1P2NQ2/2KPP1B1/2Bn4 w - - 0 1)
Schogt, Hans
2nd Prize, Het Parool, 1974/I
#2
12 + 9
| 102 | Probleemblad | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Qxf4#
- 1...Re7
- 2.Rd6#
- 1...Ra8
- 2.Sxc6#
- 1...Rb8
- 2.Sxc6#
- 1...Rd8
- 2.Sxc6#
- 1...Re8
- 2.Sxc6#
- 1...Bh5
- 2.Sxf5#
- 1...Bf7
- 2.Sxf5#
- 1...Be8
- 2.Sxf5#
- 1...Bd6
- 2.Rxd6#
- 1...Bh6
- 2.Rd6#
- 1...Bg7
- 2.Rd6#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sc3
- 2.dxc3#
- 1...Sxe3+
- 2.Qxe3#
- 2.dxe3#
- 1...c5
- 2.Qd5#
- 1...Qxf4
- Tries
- 1.Sxd1?
- threat
- 2.Bb2#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 2.e3#
- 1...Qxf4
- 2.Bb2#
- 2.Qc3#
- 2.Qd3#
- 2.Qxf4#
- 1...Rb5
- 2.Qc3#
- 2.Qe3#
- 1...Qe1
- 2.Bb2#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...Qf2
- 2.Bb2#
- 2.Qxf2#
- 2.Qc3#
- 2.Qd3#
- 1...Qg3
- 2.Bb2#
- 2.e3#
- 1...Qh3
- 2.Bb2#
- 2.e3#
- 1...Re7
- 2.Bb2#
- 2.Rd6#
- 2.Qc3#
- 2.Qd3#
- 1...Re8
- 2.Sxc6#
- 2.Bb2#
- 2.Qc3#
- 2.Qd3#
- 1...Ba3
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 2.e3#
- 1...Bb4
- 2.Qd3#
- 2.Qe3#
- 2.e3#
- 1...Rxb3!
- threat
- 1.Bb2+?
- 1...Sc3
- 2.Bxc3#
- 2.dxc3#
- 1...Sxb2!
- 1...Sc3
- 1.Raxf5?
- threat
- 2.Qe4#
- 1...Sxe3+
- 2.Qxe3#
- 2.dxe3#
- 1...Qxf4
- 2.Qxf4#
- 1...Re7
- 2.Rd6#
- 1...Re8
- 2.Sxc6#
- 1...Sf2
- 2.Bb2#
- 1...Sc3
- 2.dxc3#
- 1...Bxf5+!
- threat
- 1.Rfxf5?
- threat
- 2.Qe4#
- 1...Bxf5+
- 2.Sxf5#
- 1...Sxe3+
- 2.Qxe3#
- 2.dxe3#
- 1...Qxf4
- 2.Qxf4#
- 1...Re7
- 2.Ra4#
- 1...Re8
- 2.Sxc6#
- 1...Sf2
- 2.Bb2#
- 1...Sc3
- 2.dxc3#
- 1...Qe7!
- threat
- 1.Rxc6?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Rxc6+
- 2.Sxc6#
- 1...Sxe3+
- 2.Qxe3#
- 2.dxe3#
- 1...Rb5
- 2.Sxb5#
- 1...Rd7
- 2.Sb5#
- 1...Rd8
- 2.Rc4#
- 1...Bf7
- 2.Sxf5#
- 1...Bc5
- 2.Qd5#
- 1...Sc3
- 2.dxc3#
- 1...Qd8!
- threat
- 1.Sxd1?
- Keys
- 1.Qxc6!
- threat
- 2.Rd5#
- 1...Rxc6+
- 2.Sxc6#
- 1...Sxe3+
- 2.dxe3#
- 1...Rb5
- 2.Sxb5#
- 1...Rd7
- 2.Sb5#
- 1...Rd8
- 2.Qc4#
- 1...Bf7
- 2.Sxf5#
- 1...Bc5
- 2.Qd5#
- 1...Sc3
- 2.dxc3#
- threat
- 1.Qxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 13
- Sets
- Q(c);OGATE,XP(I)::QAR2(H),XQ(c)
- R(g);S_CUTB(i)::R(K)
- R(h);N_GUARD::S(L),XP(e)
- B(f);N_GUARD::S(G),XP(d)
- B(i);N_GUARD::R(K),XB(i)
- B(i);N_GUARD::R(K)
- S(a);N_GUARD::B(A),XS(a)
- S(a);N_GUARD::B(A)
- S(a);OGATE::P(C),XS(a)
- P(e);N_GUARD::QAR1(H)
- Tries
- Try
- S(G);XS(a)
- Threat
- DUALS(5)
- Refutation
- R(g);XP(F)
- Try
- B(A);CHECK
- Refutation
- S(a);XB(A)
- Try
- R(J);P_SPINR(J),XP(d)
- Threat
- QAR1(H)
- Vars
- Q(c);OGATE,XP(I)::QAR2(H),XQ(c)
- R(g);S_CUTB(i)::R(K)
- R(h);N_GUARD::S(L),XP(e)
- S(a);N_GUARD::B(A)
- S(a);OGATE::P(C),XS(a)
- Refutation
- B(f);CHECK,XR(J)
- Try
- R(K);P_SPINR(K),XP(d)
- Threat
- QAR1(H)
- Vars
- B(f);CHECK,XR(K)::S(G),XB(f)
- Q(c);OGATE,XP(I)::QAR2(H),XQ(c)
- R(g);N_GUARD,S_CUTB(i)::R(J)
- R(h);N_GUARD::S(L),XP(e)
- S(a);N_GUARD::B(A)
- S(a);OGATE::P(C),XS(a)
- Refutation
- Q(c);
- Try
- R(K);P_SPINR(K),XP(e)
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,XR(K)::S(L),XR(h)
- R(g);N_GUARD::S(L),XR(g)
- R(g);N_GUARD::S(L)
- R(h);N_GUARD,N_PINR(K)::R1(K)
- B(f);N_GUARD::S(G),XP(d)
- B(i);N_PINR(K)::QAR1(H)
- S(a);N_PINR(K),OGATE::P(C),XS(a)
- Refutation
- Q(c);
- Try
- Actual
- Q(H);P_SPINQ(H),XP(e)
- Threat
- R1(J)
- Vars
- R(h);CHECK,XQ(H)::S(L),XR(h)
- S(a);CHECK,OGATE,XS(G)::P(C),XS(a)
- R(g);N_GUARD::S(L),XR(g)
- R(g);N_GUARD::S(L)
- R(h);N_GUARD,N_PINQ(H)::QAR1(H)
- B(f);N_GUARD::S(G),XP(d)
- B(i);N_PINQ(H)::QAR1(H)
- S(a);N_PINQ(H),OGATE::P(C),XS(a)
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).