MESON Chess Problem Database
Problem Display
PID: 198278 (7B/1q3n2/5P1N/2PPk1P1/3p3R/1B2N2p/Q5n1/2K5 w - - 0 1)
van Beek, Huibrecht
Rivista del Club Argentino de Ajedrez, 1920
#2
11 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Sxf7#
- 1...Qc6
- 2.Sxf7#
- 1...Qa8
- 2.Sxf7#
- 1...Qc8
- 2.Sxf7#
- 1...Qxb3
- 2.Sxf7#
- 1...Qb4
- 2.Sxf7#
- 1...Qb5
- 2.Sxf7#
- 1...Qb6
- 2.Sxf7#
- 1...Qb8
- 2.Sxf7#
- 1...Se1
- 2.Qh2#
- 1...Sxe3
- 2.Qh2#
- 1...Sxg5
- 2.f7#
- 1...Sd6
- 2.f7#
- 1...Sxh6
- 2.f7#
- 1...Sd8
- 2.f7#
- 1...dxe3
- 2.Qa1#
- 2.Qb2#
- 1...d3
- 2.Qa1#
- 2.Qb2#
- 1...Qa6
- Tries
- 1.Qb1?
- threat
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Qf5#
- 1...Sxe3
- 2.Re4#
- 2.Qe4#
- 1...Sxg5
- 2.Qf5#
- 2.f7#
- 1...Sxh6
- 2.Re4#
- 2.Qe4#
- 2.f7#
- 1...Qc8
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 1...Qd7
- 2.Re4#
- 2.Qe4#
- 1...Sf4
- 2.Seg4#
- 2.Shg4#
- 2.Qf5#
- 1...Sd6
- 2.f7#
- 1...d3
- 2.Qa1#
- 2.Qb2#
- 1...Sxh4!
- threat
- 1.Qc2?
- threat
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Qf5#
- 1...Sxe3
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 1...Sxg5
- 2.Qf5#
- 2.f7#
- 1...Sxh6
- 2.Re4#
- 2.Qe4#
- 2.f7#
- 1...Qc8
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 1...Qd7
- 2.Re4#
- 2.Qe4#
- 1...Sf4
- 2.Seg4#
- 2.Shg4#
- 2.Qf5#
- 1...Sd6
- 2.f7#
- 1...d3
- 2.Qb2#
- 2.Qc3#
- 1...Sxh4!
- threat
- 1.Qxg2?
- threat
- 2.Sc4#
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 2.Qg3#
- 1...Qxd5
- 2.Qxd5#
- 1...Qxb3
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 2.Qg3#
- 1...Sxg5
- 2.Sc4#
- 2.Qh2#
- 2.Qg3#
- 2.Qxg5#
- 2.f7#
- 1...Sxh6
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 2.Qg3#
- 2.f7#
- 1...dxe3
- 2.Re4#
- 2.Qe4#
- 2.Qb2#
- 2.Qh2#
- 2.Qg3#
- 1...Qa6
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 2.Qg3#
- 1...Qb4
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 2.Qg3#
- 1...Qb5
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 2.Qh2#
- 2.Qg3#
- 1...Sd6
- 2.Qh2#
- 2.Qg3#
- 2.f7#
- 1...h2
- 2.Sc4#
- 2.Re4#
- 2.Qe4#
- 2.Qxh2#
- 2.Qg3#
- 1...hxg2!
- threat
- 1.Qb1?
- Keys
- 1.Qe2!
- threat
- 2.Sxg2#
- 1...Qxd5
- 2.Sc4#
- 1...Qxb3
- 2.Sxf7#
- 1...Sxe3
- 2.Qh2#
- 1...Sxh4
- 2.Sg2#
- 1...Sxg5
- 2.f7#
- 1...Sxh6
- 2.f7#
- 1...dxe3
- 2.Qb2#
- 1...Sf4
- 2.Seg4#
- 1...Qa6
- 2.Sxf7#
- 1...Qb5
- 2.Sxf7#
- 1...Se1
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sef5#
- 2.Qh2#
- 1...Sd6
- 2.f7#
- 1...d3
- 2.Qb2#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- Q(e);N_GUARD::S(J),XS(f)
- Q(e);N_GUARD,P_PINP(F)::S(J),XS(f)
- Q(e);N_GUARD,XB(C)::S(J),XS(f)
- S(a);OGATE::QAB(B)
- S(a);OGATE,XS(D)::QAB(B)
- S(f);OGATE,XP(H)::B(K)+P(I)
- S(f);OGATE::B(K)+P(I)
- S(f);OGATE,XS(J)::B(K)+P(I)
- Tries
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(e);XP(G)::QAR1(B)
- S(f);OGATE::B(K)+P(I)
- Refutation
- S(a);XR(E)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(e);XP(G)::QAR1(B)
- S(f);OGATE::B(K)+P(I)
- Refutation
- S(a);XR(E)
- Try
- Q(B);XS(a)
- Threat
- DUALS(5)
- Vars
- Q(e);OGATE,XP(G)::QAR1(B),XQ(e)
- Refutation
- P(b);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAR(B)+S(D),XS(a)
- Vars
- Q(e);SBLOCK,XP(G)::QAR(B)+S(D),DCHECK
- Q(e);N_GUARD,XB(C)::S(J),XS(f)
- S(a);OGATE,P_SPINS(a),XS(D)::QAB(B)
- S(a);XR(E)::QAR(B)+S(D)
- S(f);OGATE,XP(H)::B(K)+P(I)
- S(f);OGATE,XS(J)::B(K)+P(I)
- P(c);OGATEB,P_SPINP(c),XS(D)::QAB(B)
- S(a);SBLOCK::QAR(B)+S(D),DCHECK
- Q(e);N_GUARD::S(J),XS(f)
- S(f);OGATE::B(K)+P(I)
- P(c);OGATEB::QAB(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).