MESON Chess Problem Database
Problem Display
PID: 18083 (K5B1/B2p1N2/p1R5/3kp3/p1R5/6nq/5nr1/1Qr5 w - - 0 1)
Groeneveld, Cornelis
1st Prize, Il Due Mosse, 1953
#2
7 + 10
| 3105 | FIDE Album (1945-1955) | 1964 |
| 5227 | Schaak..., maar raak! | 1969 |
| 102 | Probleemblad | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.R6c5#
- 1...Qh1
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 1...Qh2
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 1...Qh4
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 1...Qh6
- 2.Sxh6#
- 1...Qh8
- 2.Sxh8#
- 1...Rxc4
- 2.Rd6#
- 1...Sd1
- 2.Qd3#
- 1...Sfh1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sfe4
- 2.Qd3#
- 1...Sg4
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 2.Qd3#
- 1...Sf5
- 2.Sg5#
- 1...a5
- 2.Qb5#
- 1...Qe6
- Tries
- 1.Rd4+?
- 1...Kxc6
- 2.Qb6#
- 2.Qb7#
- 1...exd4!
- 1...Kxc6
- 1.Qf5?
- threat
- 2.Sxe5#
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 2.R6c5#
- 2.Qxe5#
- 1...Rxc4
- 2.Sxe5#
- 2.Sd8#
- 2.Rd6#
- 1...Sxf5
- 2.Sg5#
- 1...dxc6
- 2.Rd4#
- 1...Qg4
- 2.Sg5#
- 2.R6c5#
- 2.Qxe5#
- 1...Qh5
- 2.R6c5#
- 2.Qxd7#
- 1...Qh6
- 2.Sxh6#
- 2.R6c5#
- 2.Qxe5#
- 1...Qh7
- 2.R6c5#
- 2.Qxd7#
- 2.Qxe5#
- 1...Qh8
- 2.Sxh8#
- 2.R6c5#
- 2.Qxd7#
- 1...Re1
- 2.Sxe5#
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 2.R6c5#
- 1...Sd3
- 2.Sxe5#
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 2.Qxd3#
- 1...Sfe4
- 2.Sxe5#
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 2.Qxe5#
- 1...Sg4
- 2.Sxe5#
- 2.Sg5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 2.R6c5#
- 2.Qd3#
- 2.Qxd7#
- 1...Sf1
- 2.Sg5#
- 2.R6c5#
- 2.Qxe5#
- 1...Sgh1
- 2.Sg5#
- 2.R6c5#
- 2.Qxe5#
- 1...Se2
- 2.Sg5#
- 2.R6c5#
- 2.Qxe5#
- 1...Sge4
- 2.Sg5#
- 2.Qxe5#
- 1...Sh5
- 2.Sg5#
- 2.R6c5#
- 2.Qxe5#
- 1...d6
- 2.Sxe5#
- 2.Sg5#
- 2.Sxd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sh8#
- 1...Qxf5!
- threat
- 1.Rd4+?
- Keys
- 1.Qa2!
- threat
- 2.Rd6#
- 1...Rxc4
- 2.Qxc4#
- 1...dxc6
- 2.Rd4#
- 1...d6
- 2.Rxd6#
- 1...Qe6
- 2.R6c5#
- 1...Qh6
- 2.Sxh6#
- 1...Sfe4
- 2.Rc2#
- 1...Sge4
- 2.Rc3#
- 1...Sf5
- 2.Sg5#
- threat
- 1.Qa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(e);SBLOCK::R1(C)
- Q(e);N_GUARD::B(G)+S(E),XQ(e)
- Q(e);N_GUARD,P_PINB(G)::B(G)+S(E),XQ(e)
- R(a);SBLOCK,XR(B)::R1(C)
- S(b);N_GUARD::QAR2(A)
- S(b);N_GUARD::QAR2(A),XS(b)
- S(d);S_CUTQ(e)::B(G)+S(E)
- P(i);N_GUARD::QAR2(A)
- Tries
- Try
- R(B);CHECK
- Refutation
- P(h);XR(B)
- Try
- Q(A);P_PINP(h)
- Threat
- DUALS(8)
- Vars
- S(d);N_SPINP(h),XQ(A)::B(G)+S(E)
- P(j);SBLOCK,XR(C)::R1(B)
- Refutation
- Q(e);N_SPINP(h),XQ(A)
- Try
- Actual
- Q(A);
- Threat
- R1(C)
- Vars
- R(a);OGATE,P_SPINR(a),XR(B)::QAB1(A),XR(a)
- P(j);SBLOCK,XR(C)::QAB(A)+R(B),DCHECK
- P(j);::R1(C),XP(j)
- Q(e);SBLOCK::R1(C)
- Q(e);N_GUARD::B(G)+S(E),XQ(e)
- S(b);SBLOCK::QAB(A)+R(B)
- S(d);SBLOCK::QAB(A)+R(B)
- S(d);S_CUTQ(e)::B(G)+S(E)
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).