MESON Chess Problem Database
Problem Display
PID: 202523 (1n1b3K/P2R2Pb/N2p1p2/p2kp3/2R4Q/3P1rn1/6NB/4qr1B w - - 0 1)
Loedel, Juan Eduardo
Brisbane Courier, 1923
#2
11 + 12
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf2
- 2.Sf4#
- 1...Re3
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Rf5
- 2.Sf4#
- 1...Bxd3
- 2.g8Q#
- 2.g8B#
- 1...Be4
- 2.g8Q#
- 2.g8B#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...Rf2
- Tries
- 1.Qxh7?
- threat
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Ke6
- 2.g8Q#
- 2.g8B#
- 1...Rxh1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Rxd3
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Sxh1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Sxa6
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Sxd7
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qd2
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qf2
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qc3
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qb4
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qa1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qb1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qc1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qd1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qe2
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qe3
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Qe4
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Rg1
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...R1f2
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...R3f2
- 2.Sf4#
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Re3
- 2.Sf4#
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Rf4
- 2.Sxf4#
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Rf5
- 2.Sf4#
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Bb6
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Bc7
- 2.Sxc7#
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Be7
- 2.Sc7#
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Se2
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Se4
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Sf5
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Sh5
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...Sc6
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...a4
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...f5
- 2.Qg8#
- 2.g8Q#
- 2.g8B#
- 1...e4!
- threat
- 1.Qxh7?
- Keys
- 1.Qxf6!
- threat
- 2.Rxd6#
- 2.Qxd6#
- 1...Rxd3
- 2.Se3#
- 1...Rxf6
- 2.Sf4#
- 1...Bxd3
- 2.g8Q#
- 2.g8B#
- 1...Bxf6
- 2.Sc7#
- 1...Sxd7
- 2.a8Q#
- 2.a8B#
- 1...Qb4
- 2.Se3#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...Se4
- 2.Qxe5#
- 1...Sf5
- 2.Qf7#
- threat
- 1.Qxf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 4
- Sets
- R(c);::B(A)+S(B),DCHECK
- R(c);::B(A)+S(B),DCHECK,XR(c)
- B(j);N_GUARD,XP(D)::P=Q
- B(j);N_GUARD::P=Q
- B(l);N_GUARD::S(G),XB(l)
- B(l);N_GUARD::S(G)
- Tries
- Try
- Q(F);XB(j)
- Threat
- DUALS(3)
- Vars
- K(f);N_SPINP(h),S_FLIGHT::P=Q
- Refutation
- P(g);
- Try
- Actual
- Q(F);XP(i)
- Threat
- DUALS(2)
- Vars
- R(c);XP(D)::B(A)+S(B),DCHECK
- R(c);XQ(F)::B(A)+S(B),DCHECK
- B(j);N_GUARD,XP(D)::P=Q
- B(l);N_GUARD,P_PINP(J),XQ(F)::S(G)
- S(k);N_GUARD,N_SPINP(h),XR(I)::P=Q
- Q(a);N_GUARD::S(B)
- B(l);N_GUARD::S(G),XB(l)
- B(l);N_GUARD::S(G)
- S(d);S_CUTQ(a)::QAR1(F),XP(g)
- S(d);S_CUTR(c)::QAB(F)
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).