MESON Chess Problem Database
Problem Display
PID: 249888 (B2BNbqn/3R1r1b/R5n1/3Nk3/Kp4Pp/3Qprp1/8/8 w - - 0 1)
Schneider, Johann Bernhard Michael
Deutsche Schachzeitung, 1969
#2
9 + 12
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qxe3#
- 1...Rf2
- 2.Qxe3#
- 1...R3f5
- 2.Qxe3#
- 1...R3f6
- 2.Qxe3#
- 1...Re7
- 2.Bc7#
- 1...Bh6
- 2.Bc7#
- 1...Bg7
- 2.Bc7#
- 1...Se7
- 2.Bc7#
- 1...Rf1
- Tries
- 1.Sc3?
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Kf4
- 2.Qe4#
- 2.Qd4#
- 1...Rxd7
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 2.Qxd6#
- 1...R3f4
- 2.Rd5#
- 2.Qd5#
- 1...Bc5
- 2.Qe4#
- 1...Sf4
- 2.Qd4#
- 1...Se7
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- 1...R7f4!
- threat
- 1.Sxe3?
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Kf4
- 2.Qe4#
- 2.Qd4#
- 1...Rxe3
- 2.Qxe3#
- 2.Qd4#
- 1...Rxd7
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 2.Qxd6#
- 1...R3f4
- 2.Rd5#
- 2.Qd5#
- 1...Bc5
- 2.Qe4#
- 1...Sf4
- 2.Sc4#
- 2.Qd4#
- 1...Se7
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- 1...R7f4!
- threat
- 1.Sxb4?
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Kf4
- 2.Qe4#
- 2.Qd4#
- 1...Rxd7
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 2.Qxd6#
- 1...R3f4
- 2.Rd5#
- 2.Qd5#
- 1...Bc5
- 2.Qe4#
- 1...Sf4
- 2.Qc3#
- 2.Qd4#
- 1...Se7
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- 1...R7f4!
- threat
- 1.Sf4?
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Kxf4
- 2.Qe4#
- 2.Qd4#
- 1...R3xf4
- 2.Rd5#
- 2.Qd5#
- 1...Rxd7
- 2.Qe4#
- 1...Sxf4
- 2.Qd4#
- 1...Bc5
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 2.Qxd6#
- 1...Se7
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- 1...R7xf4!
- threat
- 1.Sb6?
- threat
- 2.Qe4#
- 1...Kf4
- 2.Qe4#
- 2.Qd4#
- 1...Ke6
- 2.Qd5#
- 1...R3f4
- 2.Qd5#
- 1...Sf4
- 2.Sc4#
- 1...Se7
- 2.Qd6#
- 1...R7f4!
- threat
- 1.Sdc7?
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Kf4
- 2.Qe4#
- 2.Qd4#
- 1...Rxd7
- 2.Qe4#
- 1...R3f4
- 2.Re6#
- 2.Rd5#
- 2.Qd5#
- 1...Bc5
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 2.Qxd6#
- 1...Sf4
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 2.Qd6#
- 1...R7f4!
- threat
- 1.Se7?
- threat
- 2.Bc7#
- 2.Qe4#
- 2.Qd4#
- 2.Qd6#
- 1...Bxe7
- 2.Qe4#
- 2.Qd4#
- 1...Sxe7
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- 1...R7f4
- 2.Bc7#
- 2.Qd6#
- 1...R3f4
- 2.Bc7#
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 2.Qd6#
- 1...R3f6
- 2.Qe4#
- 2.Qxe3#
- 2.Qd4#
- 1...R7f6
- 2.Qe4#
- 2.Qd4#
- 1...Sf4
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- 1...Kf4!
- threat
- 1.Bf6+?
- 1...R3xf6
- 2.Qxe3#
- 1...R7xf6!
- 1...R3xf6
- 1.Sc3?
- Keys
- 1.Sdf6!
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Kf4
- 2.Qf5#
- 1...Rxd7
- 2.Qe4#
- 1...Bd6
- 2.Qe4#
- 2.Qxd6#
- 1...Rf4
- 2.Rd5#
- 2.Qd5#
- 1...Bc5
- 2.Qe4#
- 1...Sf4
- 2.Qd4#
- 1...Se7
- 2.Bc7#
- 2.Qd4#
- 2.Qd6#
- threat
- 1.Sdf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(b);N_GUARD::QAR2(A),XP(a)
- R(h);S_CUTB(j)::B(H)
- B(j);N_GUARD::B(H)
- S(g);S_CUTB(j)::B(H)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(h);XR(F)::QAR1(A)
- B(j);::QAR1(A)
- S(g);::QAB1(A)
- Refutation
- R(h);
- Try
- S(D);XP(a)
- Threat
- DUALS(2)
- Vars
- R(h);XR(F)::QAR1(A)
- B(j);::QAR1(A)
- Refutation
- R(h);
- Try
- S(D);XP(d)
- Threat
- DUALS(2)
- Vars
- R(h);XR(F)::QAR1(A)
- B(j);::QAR1(A)
- Refutation
- R(h);P_PINS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(h);XR(F)::QAR1(A)
- S(g);XS(D)::QAB1(A)
- B(j);::QAR1(A)
- Refutation
- R(h);XS(D)
- Try
- S(D);
- Threat
- QAR1(A)
- Vars
- K(f);N_GUARD,P-FLIGHT::QAB1(A)
- R(b);SBLOCK::QAR1(A)
- S(g);SBLOCK::S(D)
- S(g);S_CUTB(j)::QAB1(A)
- Refutation
- R(h);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(h);XR(F)::QAR1(A)
- B(j);::QAR1(A)
- S(g);::QAB1(A)
- Refutation
- R(h);
- Try
- S(D);
- Threat
- DUALS(4)
- Refutation
- K(f);S_FLIGHT
- Try
- B(H);CHECK
- Vars
- R(b);XB(H)::QAR2(A),XP(a)
- Refutation
- R(h);XB(H)
- Try
- Actual
- S(D);
- Threat
- DUALS(2)
- Vars
- K(f);S_CUTR(b),S_FLIGHT::QAR1(A)
- R(h);XR(F)::QAR1(A)
- B(j);::QAR1(A)
- S(g);::QAB1(A)
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).