MESON Chess Problem Database
Problem Display
PID: 274336 (8/1N1p3q/1Qp3b1/Kp4r1/1Nkp2r1/6b1/P3RR2/B5n1 w - - 0 1)
Johandl, Alois
3rd HM., Zurcher Woche, 1963
#2
8 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Rc2#
- 1...Rf4
- 2.Sd6#
- 1...Rc5
- 2.Qxc5#
- 1...Re5
- 2.Sd6#
- 1...Rf5
- 2.Rc2#
- 1...Bxf2
- 2.Sd6#
- 1...Bf4
- 2.Qxd4#
- 1...Bh4
- 2.Sd6#
- 1...Be5
- 2.Qc5#
- 1...Bd6
- 2.Sxd6#
- 1...Be4
- 2.Qxd4#
- 1...Bf5
- 2.Qc5#
- 1...c5
- 2.Qxb5#
- 1...d5
- 2.Qc5#
- 2.Qxc6#
- 1...Re4
- Tries
- 1.Re4?
- threat
- 2.Rc2#
- 2.Qxd4#
- 1...Rxe4
- 2.Rc2#
- 1...Bxf2
- 2.Sd6#
- 1...Bxe4
- 2.Qxd4#
- 1...Qh2
- 2.Qxd4#
- 1...Qg7
- 2.Rc2#
- 1...Qh8
- 2.Rc2#
- 1...Rc5
- 2.Rc2#
- 2.Qxc5#
- 1...Rd5
- 2.Rc2#
- 1...Be5
- 2.Rc2#
- 2.Qc5#
- 1...Bc7
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...c5
- 2.Rc2#
- 2.Qxb5#
- 1...Se2!
- threat
- 1.Re5?
- threat
- 2.Sd6#
- 2.Qc5#
- 1...Rxe5
- 2.Sd6#
- 1...Bxe5
- 2.Qc5#
- 1...c5
- 2.Sd6#
- 2.Qxc5#
- 2.Qxb5#
- 1...d6
- 2.Sxd6#
- 2.Qxc6#
- 1...Qe7!
- threat
- 1.Rf4?
- threat
- 2.Sd6#
- 2.Qxd4#
- 1...Rxf4
- 2.Sd6#
- 1...Bxf4
- 2.Qxd4#
- 1...Sxe2
- 2.Sd6#
- 1...Qe7
- 2.Qxd4#
- 1...Qg7
- 2.Sd6#
- 1...Qh8
- 2.Sd6#
- 1...Rc5
- 2.Sd6#
- 2.Qxc5#
- 1...Bf2
- 2.Sd6#
- 1...Sf3
- 2.Sd6#
- 1...c5
- 2.Sd6#
- 2.Qxb5#
- 1...d6
- 2.Sxd6#
- 2.Qxd4#
- 1...Rd5!
- threat
- 1.Qxc6+?
- 1...Rc5
- 2.Qxc5#
- 1...dxc6!
- 1...Rc5
- 1.Re4?
- Keys
- 1.Rf5!
- threat
- 2.Rc2#
- 2.Qc5#
- 1...Rxf5
- 2.Rc2#
- 1...Bxf5
- 2.Qc5#
- 1...Sxe2
- 2.Qc5#
- 1...Qh2
- 2.Qc5#
- 1...Qe7
- 2.Rc2#
- 1...Be1
- 2.Sd6#
- 2.Qc5#
- 1...Bd6
- 2.Sxd6#
- 2.Rc2#
- 1...Bc7
- 2.Rc2#
- 1...d3
- 2.Qc5#
- 1...c5
- 2.Rc2#
- 2.Qxc5#
- 2.Qxb5#
- 1...d6
- 2.Rc2#
- 2.Qxc6#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- R(e);S_CUTB(i)::R(C)
- R(e);S_CUTB(b)::S(H)
- R(g);N_GUARD::QAR1(G),XR(g)
- R(g);S_CUTB(b)::S(H)
- R(g);S_CUTB(i)::R(C)
- B(b);N_GUARD,XR(D)::S(H)
- B(b);S_CUTR(e)::QAR1(G),XP(d)
- B(b);N_GUARD::S(H)
- B(b);S_CUTR(g)::QAR1(G)
- B(b);N_GUARD::S(H),XB(b)
- B(i);S_CUTR(e)::QAR1(G),XP(d)
- B(i);S_CUTR(g)::QAR1(G)
- P(h);N_GUARD,S_CUTR(g)::QAB1(G),XP(f)
- Tries
- Try
- R(C);P_PINP(d)
- Threat
- DUALS(2)
- Vars
- R(e);N_SPINP(d),XR(C)::R(D)
- B(b);N_GUARD,XR(D)::S(H)
- B(i);N_SPINP(d),XR(C)::QAR1(G),XP(d)
- Q(k);::QAR1(G),XP(d)
- Q(k);::R(D)
- R(g);::R(D)
- B(b);P_PINQ(G)::R(D)
- S(a);::R(D)
- Refutation
- S(a);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(g);XR(C)::S(H)
- B(b);XR(C)::QAR1(G)
- Refutation
- Q(k);
- Try
- R(D);P_PINP(d)
- Threat
- DUALS(2)
- Vars
- R(e);N_SPINP(d),XR(D)::S(H)
- B(b);N_SPINP(d),XR(D)::QAR1(G),XP(d)
- S(a);XR(C)::S(H)
- Q(k);::QAR1(G),XP(d)
- Q(k);::S(H)
- B(b);::S(H)
- S(a);::S(H)
- Refutation
- R(g);
- Try
- Q(G);CHECK,XP(h)
- Vars
- R(g);N_GUARD,P_SPINR(g)::QAR1(G),XR(g)
- Refutation
- P(j);XQ(G)
- Try
- Actual
- R(D);
- Threat
- DUALS(2)
- Vars
- R(g);XR(D)::R(C)
- B(i);XR(D)::QAR1(G)
- S(a);XR(C)::QAR1(G)
- Q(k);::QAR1(G)
- Q(k);::R(C)
- B(b);P_PINQ(G)::R(C)
- P(d);::QAR1(G)
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).