MESON Chess Problem Database
Problem Display
PID: 73701 (2Q5/1p2Nn1B/1p6/q1nr2p1/2PkPB2/6Rr/6pP/2R1NbK1 w - - 0 1)
Drese, Gerardus Hendrikus
Tijdschrift vd KNSB, 1938
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Be3#
- 1...Bd3
- 2.Sf3#
- 1...Bxc4
- 2.Sc2#
- 1...Sb3
- 2.Sc2#
- 1...Sd3
- 2.Sf3#
- 1...Sa4
- 2.Sc2#
- 1...Sxe4
- 2.Sc2#
- 1...Sa6
- 2.Sc2#
- 1...Se6
- 2.Sc2#
- 1...Sd7
- 2.Sc2#
- 1...Se5
- 2.Be3#
- 1...Re5
- Tries
- 1.Qf5?
- threat
- 2.Be3#
- 2.Qxd5#
- 1...Qxe1
- 2.Qxd5#
- 1...Rxg3
- 2.Qxd5#
- 1...Bxc4
- 2.Sc2#
- 2.Be3#
- 1...Sxe4
- 2.Be3#
- 1...gxf4
- 2.Qxd5#
- 1...Qc3
- 2.Qxd5#
- 1...Sb3
- 2.Be3#
- 1...Sd3
- 2.Be3#
- 1...Sa4
- 2.Be3#
- 1...Sa6
- 2.Be3#
- 1...Se6
- 2.Be3#
- 1...Sd7
- 2.Be3#
- 1...Qd2
- 2.Qxd5#
- 1...Qa3
- 2.Qxd5#
- 1...Re5
- 2.Be3#
- 1...Rd6
- 2.Be3#
- 1...Rd7
- 2.Be3#
- 1...Rd8
- 2.Be3#
- 1...Se5
- 2.Be3#
- 1...Rxf5!
- threat
- 1.Qe6?
- threat
- 2.Be3#
- 2.Qxd5#
- 1...Qxe1
- 2.Qxd5#
- 1...Rxg3
- 2.Qxd5#
- 1...Bxc4
- 2.Sc2#
- 2.Be3#
- 1...Sxe4
- 2.Be3#
- 1...gxf4
- 2.Qxd5#
- 1...Qc3
- 2.Qxd5#
- 1...Sb3
- 2.Be3#
- 1...Sd3
- 2.Be3#
- 1...Sa4
- 2.Be3#
- 1...Sa6
- 2.Be3#
- 1...Sd7
- 2.Be3#
- 1...Qd2
- 2.Qxd5#
- 1...Qa3
- 2.Qxd5#
- 1...Re5
- 2.Sc2#
- 2.Be3#
- 1...Rf5
- 2.Sc2#
- 2.Sxf5#
- 2.Be3#
- 1...Rd6
- 2.Sc2#
- 2.Sf5#
- 2.Be3#
- 1...Rd7
- 2.Sc2#
- 2.Sf5#
- 2.Be3#
- 1...Rd8
- 2.Sc2#
- 2.Sf5#
- 2.Be3#
- 1...Sxe6!
- threat
- 1.Qh8+?
- 1...Re5
- 2.Be3#
- 1...Se5
- 2.Be3#
- 1...Sxh8!
- 1...Re5
- 1.Qf5?
- Keys
- 1.Qc6!
- threat
- 2.Qxd5#
- 1...Bxc4
- 2.Sc2#
- 1...Sxe4
- 2.Sc2#
- 1...bxc6
- 2.Sxc6#
- 1...Re5
- 2.Be3#
- 1...Rf5
- 2.Sxf5#
- 1...Rd6
- 2.Sf5#
- 1...Rd7
- 2.Sf5#
- 1...Rd8
- 2.Sf5#
- 1...Sb3
- 2.Sc2#
- 1...Sd3
- 2.Sf3#
- 1...Sa4
- 2.Sc2#
- 1...Sa6
- 2.Sc2#
- 1...Se6
- 2.Sc2#
- 1...Sd7
- 2.Sc2#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- R(g);SBLOCK::B(H)
- B(a);SBLOCK::S(B)
- B(a);SBLOCK,XP(F)::S(B)
- S(f);::S(B)
- S(f);SBLOCK::S(B)
- S(f);XP(G)::S(B)
- S(k);SBLOCK::B(H)
- Tries
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(B)::QAR1(K),XR(g)
- R(c);XR(E)::QAR1(K),XR(g)
- S(f);XP(G)::B(H)
- P(h);XB(H)::QAR1(K),XR(g)
- Q(e);::QAR1(K),XR(g)
- S(f);::B(H)
- R(g);::B(H)
- S(k);::B(H)
- Refutation
- R(g);XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(B)::QAR1(K),XR(g)
- R(c);XR(E)::QAR1(K),XR(g)
- S(f);XP(G)::B(H)
- P(h);XB(H)::QAR1(K),XR(g)
- Q(e);::QAR1(K),XR(g)
- S(f);::B(H)
- Refutation
- S(f);XQ(K)
- Try
- Q(K);CHECK
- Vars
- R(g);P_SPINR(g)::B(H)
- S(k);P_SPINS(k)::B(H)
- Refutation
- S(k);XQ(K)
- Try
- Actual
- Q(K);
- Threat
- QAR1(K),XR(g)
- Vars
- B(a);SBLOCK,XP(F)::S(B)
- S(f);XP(G)::S(B)
- P(j);XQ(K)::S(I),XP(j)
- R(g);SBLOCK::B(H)
- R(g);N_GUARD::S(I),XR(g)
- R(g);N_GUARD::S(I)
- S(f);::S(B)
- S(f);SBLOCK::S(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).