MESON Chess Problem Database
Problem Display
PID: 52471 (3RR3/6Q1/2prb2p/1pP1NP2/pBNkP2p/8/1PB3p1/3K4 w - - 0 1)
Hoek, Willem
Koldijk, Albert Marinus
1st HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1985-1986
#2
12 + 9
| 5110 | Bekroonde Problemen | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Bxc4
- 2.Sg4#
- 1...Bxf5
- 2.Rxd6#
- 1...Bc8
- 2.Rxd6#
- 1...g1Q+
- 2.Qxg1#
- 1...g1S
- 2.Qxg1#
- 1...g1B
- 2.Qxg1#
- 1...g1R+
- 2.Qxg1#
- 1...bxc4
- 2.Sg4#
- 1...Bxc4
- Tries
- 1.Sd3+?
- 1...Kxc4
- 2.Qc3#
- 1...Kxe4!
- 1...Kxc4
- 1.Be1?
- threat
- 2.Bf2#
- 1...g1Q
- 2.Qxg1#
- 1...g1B
- 2.Qxg1#
- 1...g1R
- 2.Qxg1#
- 1...Kxc5+!
- threat
- 1.Qxg2?
- threat
- 2.Qg1#
- 2.Qd2#
- 2.Qf2#
- 1...Bxc4
- 2.Qg1#
- 2.Qf2#
- 1...bxc4!
- threat
- 1.Qg3?
- threat
- 2.Qf2#
- 2.Qc3#
- 2.Qd3#
- 2.Qe3#
- 1...g1Q+
- 2.Qxg1#
- 1...g1R+
- 2.Qxg1#
- 1...Bxc4
- 2.Sxc6#
- 2.Qf2#
- 2.Qc3#
- 1...bxc4
- 2.Sxc6#
- 2.Qc3#
- 1...g1B
- 2.Qxg1#
- 2.Qc3#
- 2.Qd3#
- 1...hxg3!
- threat
- 1.Qg5?
- threat
- 2.Qd2#
- 2.Qe3#
- 1...g1Q+
- 2.Qxg1#
- 1...g1R+
- 2.Qxg1#
- 1...Bxc4
- 2.Sf3#
- 2.Sxc6#
- 1...bxc4
- 2.Sf3#
- 2.Sxc6#
- 1...g1B
- 2.Qd2#
- 2.Qxg1#
- 1...hxg5!
- threat
- 1.b3?
- threat
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...g1Q+
- 2.Qxg1#
- 1...g1R+
- 2.Qxg1#
- 1...Bxc4
- 2.Sxc4#
- 2.Sg4#
- 1...Bxf5
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 2.Rxd6#
- 1...bxc4
- 2.Sxc4#
- 2.Sg4#
- 1...Rd5
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 1...Rd7
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 1...Bd5
- 2.Sf3#
- 2.Sxc6#
- 1...Bd7
- 2.Sf3#
- 2.Sxc6#
- 1...Bf7
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Bc8
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 2.Rxd6#
- 1...Bg8
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sf7#
- 1...axb3!
- threat
- 1.fxe6?
- threat
- 2.Rxd6#
- 1...g1Q+
- 2.Qxg1#
- 1...g1R+
- 2.Qxg1#
- 1...Rxd8
- 2.Rxd8#
- 1...bxc4
- 2.Sg4#
- 1...Rd7
- 2.Rxd7#
- 2.Qxd7#
- 1...Rd5!
- threat
- 1.Sd3+?
- Keys
- 1.Bd2!
- threat
- 2.Be3#
- 1...g1Q+
- 2.Qxg1#
- 1...g1R+
- 2.Qxg1#
- 1...Kxc5
- 2.Qa7#
- 1...Bxc4
- 2.Sd3#
- 1...bxc4
- 2.Sd7#
- 1...g1B
- 2.Qxg1#
- threat
- 1.Bd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- B(h);SBLOCK,XS(E)::QAB(J)+S(H)
- B(h);N_GUARD,XP(I)::R(K),XR(g)
- B(h);N_GUARD::R(K),XR(g)
- P(a);CHECK,OGATE::QAB(J),XQ(a)
- P(a);OGATE::QAB(J),XS(a)
- P(a);OGATE::QAB(J),XB(a)
- P(a);CHECK,OGATE::QAB(J),XR(a)
- P(e);SBLOCK,XS(E)::QAB(J)+S(H)
- Tries
- Try
- S(H);CHECK
- Vars
- K(c);N_SPINR(g),OGATE,P-FLIGHT,P_PINS(H),XS(E)::QAR1(J)
- Refutation
- K(c);N_SPINR(g),P-FLIGHT,P_PINS(H),P_SPINB(h),XP(F)
- Try
- B(D);
- Threat
- B(D)
- Vars
- P(a);OGATE,P_PINB(D)::QAB(J),XQ(a)
- P(a);OGATE::QAB(J),XB(a)
- P(a);OGATE,P_PINB(D)::QAB(J),XR(a)
- Refutation
- K(c);CHECK,N_SPINR(g),S_FLIGHT,XP(G)
- Try
- Q(J);XP(a)
- Threat
- DUALS(3)
- Refutation
- P(e);XS(E)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- P(a);CHECK,OGATE::QAB(J),XQ(a)
- P(a);CHECK,OGATE::QAB(J),XR(a)
- Refutation
- P(d);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- P(a);CHECK,OGATE::QAB(J),XQ(a)
- P(a);CHECK,OGATE::QAB(J),XR(a)
- Refutation
- P(i);XQ(J)
- Try
- P(B);
- Threat
- DUALS(6)
- Vars
- P(a);CHECK,OGATE::QAB(J),XQ(a)
- P(a);CHECK,OGATE::QAB(J),XR(a)
- Refutation
- P(b);XP(B)
- Try
- P(I);XB(h)
- Threat
- R(K),XR(g)
- Vars
- P(a);CHECK,OGATE::QAB(J),XQ(a)
- P(a);CHECK,OGATE::QAB(J),XR(a)
- R(g);N_SPINR(g),OGATE,XR(K)::R(L),XR(g)
- P(e);SBLOCK,XS(E)::QAB(J)+S(H)
- Refutation
- R(g);
- Try
- Actual
- B(D);
- Threat
- B(D)
- Vars
- P(a);CHECK,OGATE::QAB(J),XQ(a)
- P(a);CHECK,OGATE::QAB(J),XR(a)
- K(c);N_SPINR(g),OGATEB,P_PINB(D),S_FLIGHT,XP(G)::QAB(J)
- B(h);SBLOCK,XS(E)::QAB(J)+S(H)
- P(e);SBLOCK,XS(E)::QAB(J)+S(H)
- P(a);OGATE::QAB(J),XB(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).