MESON Chess Problem Database
Problem Display
PID: 73541 (3N4/KB4b1/3P2q1/2R3p1/1P1k4/4n2r/4Q3/1b2RnN1 w - - 0 1)
van der Weerd, JAM
Tijdschrift vd KNSB, 1942
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Se6#
- 1...Qd3
- 2.Se6#
- 1...Qh5
- 2.Se6#
- 1...Qh7
- 2.Se6#
- 1...Qe6
- 2.Sxe6#
- 1...Rh1
- 2.Sf3#
- 1...Rh2
- 2.Sf3#
- 1...Rf3
- 2.Sxf3#
- 1...Rh4
- 2.Sf3#
- 1...Rh5
- 2.Sf3#
- 1...Rh6
- 2.Sf3#
- 1...Rh7
- 2.Sf3#
- 1...Rh8
- 2.Sf3#
- 1...Bd3
- 2.Qb2#
- 1...Bf6
- 2.Se6#
- 1...Sg3
- 2.Sf3#
- 2.Qxe3#
- 1...Sd1
- 2.Sc6#
- 2.Rc4#
- 2.Qc4#
- 1...Sc2
- 2.Sc6#
- 2.Rc4#
- 2.Qc4#
- 1...Sg2
- 2.Sc6#
- 2.Rc4#
- 2.Qc4#
- 1...Sc4
- 2.Rxc4#
- 2.Qxc4#
- 1...Sg4
- 2.Sc6#
- 2.Rc4#
- 2.Qc4#
- 1...Sd5
- 2.Sc6#
- 2.Rc4#
- 2.Qc4#
- 1...Sf5
- 2.Sc6#
- 2.Rc4#
- 2.Qc4#
- 1...Qc2
- Tries
- 1.Rd1+?
- 1...Qd3
- 2.Se6#
- 2.Qb2#
- 1...Bd3
- 2.Qb2#
- 1...Sxd1
- 2.Sc6#
- 2.Rc4#
- 1...Sd2!
- 1...Qd3
- 1.Qb5?
- threat
- 2.Se2#
- 1...Sc4
- 2.Qxc4#
- 1...Qc2
- 2.Se6#
- 1...Qd3
- 2.Se6#
- 1...Qh5
- 2.Se6#
- 1...Rh2
- 2.Sf3#
- 1...Sg3
- 2.Sf3#
- 1...Sd1
- 2.Sc6#
- 2.Qc4#
- 1...Sc2
- 2.Sc6#
- 2.Qc4#
- 1...Sg2
- 2.Sc6#
- 2.Qc4#
- 1...Sg4
- 2.Sc6#
- 2.Qc4#
- 1...Sd5
- 2.Sc6#
- 2.Qc4#
- 1...Sf5
- 2.Sc6#
- 2.Qc4#
- 1...Bd3!
- threat
- 1.Qd2+?
- 1...Qd3
- 2.Se2#
- 2.Se6#
- 1...Bd3
- 2.Se2#
- 2.Qc3#
- 2.Qb2#
- 1...Sxd2!
- 1...Qd3
- 1.Rd1+?
- Keys
- 1.Qa6!
- threat
- 2.Se2#
- 1...Sc4
- 2.Qxc4#
- 1...Qc2
- 2.Se6#
- 1...Qd3
- 2.Se6#
- 1...Qh5
- 2.Se6#
- 1...Rh2
- 2.Sf3#
- 1...Bd3
- 2.Qa1#
- 1...Sg3
- 2.Sf3#
- 1...Sd1
- 2.Sc6#
- 2.Qc4#
- 1...Sc2
- 2.Sc6#
- 2.Qc4#
- 1...Sg2
- 2.Sc6#
- 2.Qc4#
- 1...Sg4
- 2.Sc6#
- 2.Qc4#
- 1...Sd5
- 2.Sc6#
- 2.Qc4#
- 1...Sf5
- 2.Sc6#
- 2.Qc4#
- threat
- 1.Qa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(g);N_GUARD::S(I)
- Q(g);N_GUARD::S(I),XQ(g)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- B(a);SBLOCK::QAB(C)
- B(h);S_CUTQ(g)::S(I)
- Tries
- Try
- R(A);CHECK
- Vars
- B(a);P_SPINB(a)::QAB(C)
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(C);
- Threat
- S(B)
- Vars
- S(c);N_GUARD::QAR1(C),XS(c)
- Q(g);N_GUARD::S(I)
- R(d);N_GUARD::S(B)
- S(b);S_CUTR(d)::S(B)
- Refutation
- B(a);
- Try
- Q(C);CHECK
- Refutation
- S(b);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- S(B)
- Vars
- S(c);N_GUARD::QAR1(C),XS(c)
- Q(g);N_GUARD::S(I)
- R(d);N_GUARD::S(B)
- B(a);SBLOCK::QAB(C)
- S(b);S_CUTR(d)::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).