MESON Chess Problem Database
Problem Display
PID: 132040 (4Rb2/2Nr1p1B/Kp4N1/1R3n2/3kpPp1/pP5q/4Pnr1/2Q3B1 w - - 0 1)
Casa, Alex
1st Comm., Die Schwalbe, 1952/II
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Qd2#
- 1...Qh2
- 2.Qd2#
- 1...Qe3
- 2.Qc4#
- 1...Qh4
- 2.Qd2#
- 1...Qh5
- 2.Qd2#
- 1...Qh6
- 2.Qd2#
- 1...Qxh7
- 2.Qd2#
- 1...Rd5
- 2.Rxd5#
- 1...Rd6
- 2.Rb4#
- 1...Re7
- 2.Rb4#
- 2.Rd5#
- 1...Bb4
- 2.Rxb4#
- 1...Bd6
- 2.Rd5#
- 1...Bh6
- 2.Rb4#
- 1...Bg7
- 2.Rb4#
- 1...Se3
- 2.Qa1#
- 1...Sg3
- 2.Qd2#
- 1...Sd6
- 2.Rd5#
- 1...Se7
- 2.Rb4#
- 1...e3
- 2.Qa1#
- 2.Qc4#
- 1...g3
- 2.Qd2#
- 1...fxg6
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Qh1
- Tries
- 1.Se7?
- threat
- 2.Sxf5#
- 2.Sc6#
- 2.Rb4#
- 1...Qxb3
- 2.Sxf5#
- 2.Sc6#
- 1...Qxh7
- 2.Sc6#
- 2.Rb4#
- 2.Qd2#
- 1...Rxc7
- 2.Sxf5#
- 2.Rd5#
- 1...Rxe7
- 2.Rb4#
- 2.Rd5#
- 1...Sxe7
- 2.Rb4#
- 1...Qc3
- 2.Sxf5#
- 1...Qd3
- 2.Sxf5#
- 2.Sc6#
- 1...Qh5
- 2.Sc6#
- 2.Rb4#
- 2.Qd2#
- 1...Qh6
- 2.Sxf5#
- 2.Rb4#
- 2.Qd2#
- 1...Rd5
- 2.Sc6#
- 2.Rb4#
- 2.Rxd5#
- 1...Rd6
- 2.Sxf5#
- 2.Rb4#
- 1...Se3
- 2.Sc6#
- 2.Qa1#
- 1...Sg3
- 2.Sc6#
- 2.Rb4#
- 2.Qd2#
- 1...Sh4
- 2.Sc6#
- 2.Rb4#
- 1...Sd6
- 2.Sc6#
- 2.Rd5#
- 1...Sh6
- 2.Sc6#
- 2.Rb4#
- 1...Sg7
- 2.Sc6#
- 2.Rb4#
- 1...g3
- 2.Sc6#
- 2.Rb4#
- 2.Qd2#
- 1...Bxe7!
- threat
- 1.Bxf2+?
- 1...Qe3
- 2.Qd2#
- 2.Qa1#
- 2.Qc4#
- 1...Se3
- 2.Qd2#
- 2.Qa1#
- 2.Qc4#
- 1...e3
- 2.Qd2#
- 2.Qa1#
- 2.Qc4#
- 1...Rxf2!
- 1...Qe3
- 1.Se7?
- Keys
- 1.Sh4!
- threat
- 2.Sxf5#
- 1...Qxh4
- 2.Qd2#
- 1...Sxh4
- 2.Rxe4#
- 1...Rd5
- 2.Rxd5#
- 1...Se3
- 2.Qa1#
- 1...Sg3
- 2.Qd2#
- 1...Sd6
- 2.Rd5#
- 1...Sh6
- 2.Rxe4#
- 1...Se7
- 2.Rb4#
- 1...Sg7
- 2.Rxe4#
- 1...g3
- 2.Qd2#
- threat
- 1.Sh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- Q(d);N_GUARD::QAR2(A)
- Q(d);N_SPINS(a),SBLOCK::QAR1(A)
- Q(d);N_GUARD,XB(J)::QAR2(A)
- R(j);N_GUARD::R1(F),XR(j)
- R(j);S_CUTB(l)::R(F)
- B(l);N_GUARD::R(F),XB(l)
- B(l);S_CUTR(j)::R1(F)
- B(l);N_GUARD::R(F)
- S(h);N_SPINS(a),SBLOCK,S_CUTQ(d)::QAB(A)
- S(h);S_CUTQ(d)::QAR2(A)
- S(h);S_CUTR(j)::R1(F)
- S(h);S_CUTB(l)::R(F)
- P(g);S_CUTQ(d)::QAR2(A)
- P(k);N_GUARD,XS(H)::S(I)
- P(k);N_GUARD::S(I)
- Tries
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- S(h);XS(H)::R(F)
- Q(d);::S(H),XS(h)
- Refutation
- B(l);XS(H)
- Try
- B(B);CHECK,XS(a)
- Refutation
- R(b);XB(B)
- Try
- Actual
- S(H);
- Threat
- S(H),XS(h)
- Vars
- Q(d);N_GUARD,XS(H)::QAR2(A)
- S(h);XS(H)::R1(K),XP(f)
- R(j);N_GUARD::R1(F),XR(j)
- S(h);N_SPINS(a),SBLOCK,S_CUTQ(d)::QAB(A)
- S(h);S_CUTQ(d)::QAR2(A)
- S(h);S_CUTR(j)::R1(F)
- S(h);::R1(K),XP(f)
- S(h);S_CUTB(l)::R(F)
- P(g);S_CUTQ(d)::QAR2(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).