MESON Chess Problem Database
Problem Display
PID: 41404 (8/3Np1Q1/1P4n1/2B2PK1/2q1k3/3R4/2B1pPb1/8 w - - 0 1)
Prochazka, Hubert
1st Prize, Western Daily Mercury, 1905
#2
9 + 6
| 3360 | Simple Two-move Themes | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Qd4#
- 1...Qb3
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Qd5
- 2.Re3#
- 1...Qa6
- 2.Qd4#
- 1...Qe6
- 2.Qd4#
- 1...Qf7
- 2.Qd4#
- 1...Qg8
- 2.Qd4#
- 1...Qxc2
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Qxc5
- 2.Sxc5#
- 1...Bf1
- 2.f3#
- 1...Bf3
- 2.Rd4#
- 1...Bh3
- 2.f3#
- 1...Sf4
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...e5
- 2.Sf6#
- 1...Qa2
- Tries
- 1.Rg3+?
- 1...Qd3
- 2.Qd4#
- 1...Qxc2
- 2.Qd4#
- 1...Kd5!
- 1...Qd3
- 1.Rh3+?
- 1...Qd3
- 2.Qd4#
- 1...Qxc2
- 2.Qd4#
- 1...Kd5!
- 1...Qd3
- 1.Qc3?
- threat
- 2.Rd4#
- 2.Qxc4#
- 1...Qxd3
- 2.Qxd3#
- 1...Qxc5
- 2.Sxc5#
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 1...Qd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Qa2
- 2.Rd4#
- 2.Qd4#
- 1...Qb3
- 2.Rd4#
- 2.Qd4#
- 1...Qb5
- 2.Rd4#
- 2.Qd4#
- 1...Qd5
- 2.Re3#
- 2.Rd4#
- 1...Qa6
- 2.Rd4#
- 2.Qd4#
- 1...Qe6
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Qd4#
- 1...Qf7
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Qd4#
- 1...Qg8
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Qd4#
- 1...Qa4
- 2.Rd4#
- 1...Qb4
- 2.Rd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Qxb4#
- 1...Se5
- 2.Rd4#
- 2.Qxe5#
- 1...Qxc3!
- threat
- 1.Rg3+?
- Keys
- 1.Qa1!
- 1...Qxd3
- 2.Qa8#
- 1...Qxc2
- 2.Qd4#
- 1...Qxc5
- 2.Sxc5#
- 1...Qd4
- 2.Qxd4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Qa2
- 2.Qd4#
- 1...Qb3
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Qd5
- 2.Re3#
- 1...Qa6
- 2.Qd4#
- 1...Qe6
- 2.Qd4#
- 1...Qf7
- 2.Qd4#
- 1...Qg8
- 2.Qd4#
- 1...Qc3
- 2.Qa8#
- 1...Qa4
- 2.Qxa4#
- 1...Qb4
- 2.Qa8#
- 1...Bf1
- 2.f3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Rd4#
- 1...Bh3
- 2.f3#
- 1...Sf4
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Qxd3
- 1.Qa1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- Q(c);N_GUARD::QAR1(I)
- Q(c);P_PINP(E),SBLOCK::B(A)+R(C),DCHECK
- Q(c);N_GUARD,XB(A)::QAR1(I)
- Q(c);N_GUARD::QAR1(I),XQ(c)
- Q(c);P_PINP(E),XB(D)::S(H),XQ(c)
- B(b);N_GUARD::P(B)
- B(b);SBLOCK::B(A)+R(C),DCHECK
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- P(f);N_GUARD,SBLOCK::S(H)
- Tries
- Try
- R(C);CHECK
- Vars
- Q(c);P_SPINQ(c)::QAR1(I)
- Q(c);XB(A)::QAR1(I)
- Refutation
- K(d);S_FLIGHT
- Try
- R(C);CHECK
- Vars
- Q(c);P_SPINQ(c)::QAR1(I)
- Q(c);XB(A)::QAR1(I)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(c);OGATE,P_SPINQ(c),XR(C)::QAB1(I),XQ(c)
- Q(c);::B(A)+R(C),DCHECK
- Refutation
- Q(c);XQ(I)
- Try
- Actual
- Q(I);
- Vars
- Q(c);N_GUARD,P_SPINQ(c),XR(C)::QAB(I)
- Q(c);N_GUARD,XB(A)::QAR1(I)
- Q(c);P_PINP(E),XB(D)::S(H),XQ(c)
- Q(c);N_GUARD::QAR1(I),XQ(c)
- P(a);OGATEB::QAR(I),XQ(a)
- P(a);OGATEB::QAR(I),XS(a)
- P(a);OGATEB::QAR(I),XB(a)
- P(a);OGATEB::QAR(I),XR(a)
- Q(c);N_GUARD::QAR1(I)
- Q(c);P_PINP(E),SBLOCK::B(A)+R(C),DCHECK
- Q(c);N_GUARD::QAB(I)
- Q(c);OGATEB::QAR(I),XQ(c)
- B(b);N_GUARD::P(B)
- B(b);OGATEB::QAB(I),XB(b)
- B(b);SBLOCK::B(A)+R(C),DCHECK
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- P(f);N_GUARD::S(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).