MESON Chess Problem Database
Problem Display
PID: 235144 (3b4/4QKp1/2N1B1pN/8/r3kn1R/8/4PP2/4R3 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 2019
#2
9 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qb4#
- 1...Ra2
- 2.Qb4#
- 1...Ra3
- 2.Qb4#
- 1...Rb4
- 2.Qxb4#
- 1...Ra5
- 2.Qb4#
- 1...Ra6
- 2.Qb4#
- 1...Ra8
- 2.Qb4#
- 1...Ba5
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 1...Bb6
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 1...Ra1
- Tries
- 1.Sf5?
- threat
- 2.Sg3#
- 2.Sd6#
- 2.f3#
- 1...Bxe7
- 2.Sg3#
- 2.f3#
- 1...Ra3
- 2.Sd6#
- 2.Qb4#
- 1...Rd4
- 2.Sg3#
- 2.f3#
- 1...Bc7
- 2.Sg3#
- 2.f3#
- 1...gxf5!
- threat
- 1.Bh3+?
- 1...Bxe7
- 2.Bg2#
- 1...Kd5!
- 1...Bxe7
- 1.Bg4+?
- 1...Bxe7
- 2.Bf3#
- 1...Se6
- 2.Bf3#
- 2.Bxe6#
- 1...Kd5!
- 1...Bxe7
- 1.Rd1?
- threat
- 2.Bd5#
- 2.Bf5#
- 1...Bxe7
- 2.Bd5#
- 1...Rd4
- 2.Rxd4#
- 1...gxh6!
- threat
- 1.Qc5?
- threat
- 2.Bd5#
- 2.Qe3#
- 2.Qc2#
- 2.Qd5#
- 2.Qe5#
- 2.f3#
- 1...Bxh4
- 2.Qe3#
- 2.Qe5#
- 2.f3#
- 1...gxh6
- 2.Qe3#
- 2.Qc2#
- 2.Qd5#
- 2.Qe5#
- 2.f3#
- 1...Rc4
- 2.Bd5#
- 2.Qe3#
- 2.Qxc4#
- 2.Qd5#
- 2.Qe5#
- 2.f3#
- 1...Ra2
- 2.Bd5#
- 2.Qe3#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 2.Qd5#
- 2.Qe5#
- 2.f3#
- 1...Ra3
- 2.Bd5#
- 2.Qb4#
- 2.Qd4#
- 2.Qc4#
- 2.Qd5#
- 2.Qe5#
- 1...Rd4
- 2.Qxd4#
- 2.Qe5#
- 1...Ra5
- 2.Bd5#
- 2.Qe3#
- 2.Qb4#
- 2.Qd4#
- 2.Qc2#
- 2.Qc4#
- 2.f3#
- 1...Bb6
- 2.Bd5#
- 2.Qc2#
- 2.Qd5#
- 2.Qe5#
- 2.f3#
- 1...Bf6
- 2.Bd5#
- 2.Qe3#
- 2.Qc2#
- 2.Qd5#
- 2.f3#
- 1...Bc7
- 2.Bd5#
- 2.Qe3#
- 2.Qc2#
- 2.Qd5#
- 2.f3#
- 1...Ra7+!
- threat
- 1.Qd6?
- threat
- 2.Bd5#
- 2.Rxf4#
- 2.Qxf4#
- 2.Qe5#
- 2.Qd3#
- 2.Qd5#
- 1...Bxh4
- 2.Qe5#
- 1...gxh6
- 2.Rxf4#
- 2.Qxf4#
- 2.Qe5#
- 2.Qd3#
- 2.Qd5#
- 1...Ra3
- 2.Bd5#
- 2.Rxf4#
- 2.Qb4#
- 2.Qxf4#
- 2.Qe5#
- 2.Qd4#
- 2.Qd5#
- 1...Rd4
- 2.Rxf4#
- 2.Qxf4#
- 2.Qe5#
- 2.Qxd4#
- 1...Ra5
- 2.Rxf4#
- 2.Qb4#
- 2.Qxf4#
- 2.Qd3#
- 2.Qd4#
- 1...Bg5
- 2.Bd5#
- 2.Qe5#
- 2.Qd3#
- 2.Qd5#
- 1...Bf6
- 2.Bd5#
- 2.Rxf4#
- 2.Qxf4#
- 2.Qd3#
- 2.Qd5#
- 1...Bc7
- 2.Bd5#
- 2.Rxf4#
- 2.Qd3#
- 2.Qd5#
- 1...g5
- 2.Bd5#
- 2.Bf5#
- 2.Qe5#
- 2.Qd3#
- 2.Qd5#
- 1...Ra7+!
- threat
- 1.Qxd8?
- threat
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...gxh6
- 2.Qd3#
- 2.Qd5#
- 1...Ra3
- 2.Bd5#
- 2.Qd4#
- 2.Qd5#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5
- 2.Qd3#
- 2.Qd4#
- 1...Ra7+!
- threat
- 1.Qc7?
- threat
- 2.Rxf4#
- 2.Qxf4#
- 2.Qe5#
- 1...Bxh4
- 2.Qe5#
- 1...Ra5
- 2.Rxf4#
- 2.Qxf4#
- 1...Ra7
- 2.Rxf4#
- 1...Bg5
- 2.Qe5#
- 1...Bf6
- 2.Rxf4#
- 2.Qxf4#
- 1...g5
- 2.Qe5#
- 1...Bxc7!
- threat
- 1.Qd7?
- threat
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Ra3
- 2.Bd5#
- 2.Qd4#
- 2.Qd5#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5
- 2.Qd3#
- 2.Qd4#
- 1...Ra7
- 2.Bd5#
- 1...Bxh4!
- threat
- 1.Sf5?
- Keys
- 1.Sg4!
- threat
- 2.f3#
- 1...Sxe2
- 2.Sge5#
- 1...Sxe6
- 2.Se3#
- 1...Sg2
- 2.Sf6#
- 1...Sd3
- 2.Sf6#
- 1...Sh3
- 2.Sf6#
- 1...Sd5
- 2.Sf6#
- 1...Sh5
- 2.Sf6#
- 1...Ra3
- 2.Qb4#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::QAR(H)
- R(a);N_GUARD::QAR(H),XR(a)
- Tries
- Try
- S(G);
- Threat
- DUALS(3)
- Refutation
- P(d);XS(G)
- Try
- B(F);CHECK
- Vars
- B(f);XQ(H)::B(F)
- Refutation
- K(b);N_SPINS(c),S_FLIGHT
- Try
- B(F);CHECK,N_PINS(c)
- Vars
- B(f);XQ(H)::B(F)
- Refutation
- K(b);S_FLIGHT
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- B(f);XQ(H)::B(F)
- R(a);N_GUARD::R1(A),XR(a)
- Refutation
- P(e);XS(G)
- Try
- Q(H);
- Threat
- DUALS(6)
- Refutation
- R(a);CHECK
- Try
- Q(H);
- Threat
- DUALS(6)
- Vars
- B(f);N_SPINS(c),XR(D)::QAR1(H)
- Refutation
- R(a);CHECK
- Try
- Q(H);XB(f)
- Threat
- DUALS(3)
- Vars
- R(a);N_GUARD::QAR1(H),XR(a)
- Refutation
- R(a);CHECK
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- B(f);N_SPINS(c),XR(D)::QAR1(H)
- R(a);P_PINQ(H)::R1(D),XS(c)
- B(f);::QAR1(H)
- P(d);::QAR1(H)
- Refutation
- B(f);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(a);N_GUARD::QAR1(H),XR(a)
- R(a);P_PINQ(H)::B(F)
- Refutation
- B(f);N_SPINS(c),XR(D)
- Try
- Actual
- S(G);N_PINS(c)
- Threat
- P(C)
- Vars
- S(c);P_SPINS(c),XP(B)::R(D)+S(G)
- S(c);P_SPINS(c),XB(F)::R(D)+S(G)
- S(c);::R(D)+S(G),DCHECK
- R(a);N_GUARD::QAR(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).