MESON Chess Problem Database
Problem Display
PID: 237264 (8/3N1Kp1/B3Qn2/q2Pp3/4k2N/2RpP3/b4P1b/2n5 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Schachzeitung, 2013
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd8
- 2.Sc5#
- 1...Qa4
- 2.Sc5#
- 1...Qc5
- 2.Sxc5#
- 1...Qxa6
- 2.Sc5#
- 1...Bb1
- 2.Rc4#
- 1...Bc4
- 2.Rxc4#
- 1...Bg1
- 2.Qxe5#
- 1...Se2
- 2.Bxd3#
- 1...Sb3
- 2.Bxd3#
- 1...Sxd5
- 2.Qf5#
- 2.Qg6#
- 1...d2
- 2.f3#
- 1...g5
- 2.Sxf6#
- 1...g6
- 2.Sxf6#
- 1...Qd8
- Tries
- 1.Sf3?
- threat
- 2.Sd2#
- 2.Sg5#
- 1...Qxc3
- 2.Sg5#
- 1...Bf4
- 2.Sd2#
- 1...Sb3
- 2.Sg5#
- 1...Sh7
- 2.Sd2#
- 1...d2
- 2.Sxd2#
- 2.Sg5#
- 1...g5
- 2.Sd2#
- 2.Sxg5#
- 1...Kxf3!
- threat
- 1.Bc4?
- threat
- 2.Qf5#
- 1...Bxc4
- 2.Rxc4#
- 1...g6
- 2.Sxf6#
- 1...Qxd5!
- threat
- 1.Rxd3?
- threat
- 2.Rd4#
- 2.Qf5#
- 2.f3#
- 1...Qxd5
- 2.f3#
- 1...Qxa6
- 2.Sc5#
- 2.Rd4#
- 2.Qf5#
- 1...Bxd5
- 2.Rd4#
- 2.f3#
- 1...Qb5
- 2.Rd4#
- 2.Qf5#
- 1...Bc4
- 2.Rd4#
- 2.Qf5#
- 1...Qd2
- 2.Sc5#
- 2.Qf5#
- 2.f3#
- 1...Qc3
- 2.Qf5#
- 2.f3#
- 1...Qb4
- 2.Qf5#
- 2.f3#
- 1...Qb6
- 2.Qf5#
- 2.f3#
- 1...Qa4
- 2.Sc5#
- 2.Qf5#
- 2.f3#
- 1...Qc5
- 2.Sxc5#
- 2.Qf5#
- 2.f3#
- 1...Se2
- 2.Qf5#
- 2.f3#
- 1...Sb3
- 2.Qf5#
- 2.f3#
- 1...g6
- 2.Sxf6#
- 2.Rd4#
- 2.f3#
- 1...Sxd3!
- threat
- 1.Rc5?
- threat
- 2.Qf5#
- 1...Qxc5
- 2.Sxc5#
- 1...g6
- 2.Sxf6#
- 1...Bxd5!
- threat
- 1.Sf3?
- Keys
- 1.Bb7!
- threat
- 2.Qf5#
- 1...Qxd5
- 2.Sc5#
- 1...Bxd5
- 2.Rc4#
- 1...g6
- 2.Sxf6#
- threat
- 1.Bb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(f);N_GUARD::S(H)
- Q(f);N_GUARD::S(H),XQ(f)
- Q(f);N_GUARD,XB(F)::S(H)
- B(b);N_GUARD::R(B)
- B(b);N_GUARD::R(B),XB(b)
- B(c);N_GUARD::QAR1(G),XP(g)
- S(a);N_GUARD::B(F),XP(d)
- P(d);::P(A)
- P(i);N_GUARD::S(H),XS(h)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(f);XR(B)::S(D)
- B(c);::S(D)
- S(a);::S(D)
- S(h);::S(D)
- Refutation
- K(e);N_SPINP(g),S_FLIGHT,XS(D)
- Try
- B(F);
- Threat
- QAB1(G)
- Vars
- B(b);OGATE,XB(F)::R(B),XB(b)
- P(i);N_GUARD::S(H),XS(h)
- Refutation
- Q(f);P_PINQ(G),XP(E)
- Try
- R(B);XP(d)
- Threat
- DUALS(3)
- Vars
- Q(f);P_PINQ(G),XP(E)::P(A)
- Refutation
- S(a);XR(B)
- Try
- R(B);
- Threat
- QAB1(G)
- Vars
- Q(f);XR(B)::S(H),XQ(f)
- P(i);N_GUARD::S(H),XS(h)
- Refutation
- B(b);P_PINQ(G),XP(E)
- Try
- Actual
- B(F);
- Threat
- QAB1(G)
- Vars
- Q(f);N_GUARD,P_PINQ(G),P_SPINQ(f),XP(E)::S(H)
- B(b);N_GUARD,P_PINQ(G),P_SPINB(b),XP(E)::R(B)
- P(i);N_GUARD::S(H),XS(h)
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).