MESON Chess Problem Database
Problem Display
PID: 134 (3Q4/Kp3Pb1/prBP1N2/2k1N2R/7R/1n1PP3/2rp4/3b2q1 w - - 0 1)
Schiffmann, Israel Abraham
3rd Prize, West Sussex Gazette, 1929
#2
11 + 10
| 35 | L'Italia Scacchistica | 1930 |
| 1397 | Faszinierendes Schachproblem | 1963 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rc4#
- 1...Rb2
- 2.Rc4#
- 1...Rc4
- 2.Rxc4#
- 1...Ra2
- Tries
- 1.Sf3+?
- 1...Kxc6
- 2.Qxb6#
- 2.Qc7#
- 2.Qd7#
- 1...Qg5!
- 1...Kxc6
- 1.Sc4+?
- 1...Kxc6
- 2.Qxb6#
- 2.Qc7#
- 2.Qd7#
- 2.Qc8#
- 2.Qe8#
- 1...Qg5
- 2.Qxb6#
- 1...Bxh5
- 2.Qxb6#
- 1...Kb4!
- 1...Kxc6
- 1.Seg4+?
- 1...Kxc6
- 2.Qxb6#
- 2.Qc7#
- 2.Qd7#
- 1...Kb4!
- 1...Kxc6
- 1.Sed7+?
- 1...Kxc6
- 2.Sb8#
- 2.Qxb6#
- 2.Qc7#
- 1...Kxd6!
- 1...Kxc6
- 1.Bh1?
- threat
- 2.Qxb6#
- 1...Kb5
- 2.Qxb6#
- 1...Rxd6
- 2.Sed7#
- 1...Rb4
- 2.Seg4#
- 1...Rb5
- 2.Qc7#
- 1...Rc6!
- threat
- 1.Bf3?
- threat
- 2.Qxb6#
- 1...Kb5
- 2.Qxb6#
- 1...Rxd6
- 2.Sed7#
- 1...Rb4
- 2.Seg4#
- 1...Rb5
- 2.Qc7#
- 1...Rc6!
- threat
- 1.Rd4?
- threat
- 2.Se4#
- 2.Sfd7#
- 2.Qxb6#
- 1...Qxe3
- 2.Qxb6#
- 1...Rxc6
- 2.Seg4#
- 2.Sed7#
- 1...Bxf6
- 2.Qxb6#
- 1...bxc6
- 2.Seg4#
- 2.Sed7#
- 2.Qxb6#
- 1...Rc4
- 2.Rxc4#
- 2.Qxb6#
- 1...Qh1
- 2.Sfd7#
- 2.Qxb6#
- 1...Qg2
- 2.Sfd7#
- 2.Qxb6#
- 1...Qg4
- 2.Qxb6#
- 1...Qg6
- 2.Sfd7#
- 2.Qxb6#
- 1...Rb4
- 2.Se4#
- 2.Sfd7#
- 2.Rd5#
- 1...Rb5
- 2.Se4#
- 2.Sfd7#
- 1...Bf3
- 2.Sfd7#
- 2.Qxb6#
- 1...Bg4
- 2.Se4#
- 2.Qxb6#
- 1...Sxd4!
- threat
- 1.Qe7?
- threat
- 2.Sfd7#
- 2.d7#
- 1...Rxc6
- 2.Sed7#
- 1...bxc6
- 2.Sed7#
- 1...Qg4
- 2.d7#
- 1...Rc4
- 2.Rxc4#
- 2.d7#
- 1...Bg4
- 2.d7#
- 1...Sd4
- 2.d7#
- 1...Bf8
- 2.Sfd7#
- 1...Bxf6!
- threat
- 1.f8Q?
- threat
- 2.Sfd7#
- 2.Qxb6#
- 1...Rxc6
- 2.Sed7#
- 1...Bxf6
- 2.Qxb6#
- 1...bxc6
- 2.Sed7#
- 2.Qxb6#
- 1...Qg4
- 2.Qxb6#
- 1...Rc4
- 2.Rxc4#
- 2.Qxb6#
- 1...Bg4
- 2.Qxb6#
- 1...Sd4
- 2.Qxb6#
- 1...Rb4
- 2.Sfd7#
- 1...Rb5
- 2.Sfd7#
- 1...Bxf8!
- threat
- 1.f8B?
- threat
- 2.Sfd7#
- 2.Qxb6#
- 1...Rxc6
- 2.Sed7#
- 1...Bxf6
- 2.Qxb6#
- 1...bxc6
- 2.Sed7#
- 2.Qxb6#
- 1...Qg4
- 2.Qxb6#
- 1...Rc4
- 2.Rxc4#
- 2.Qxb6#
- 1...Bg4
- 2.Qxb6#
- 1...Sd4
- 2.Qxb6#
- 1...Rb4
- 2.Sfd7#
- 1...Rb5
- 2.Sfd7#
- 1...Bxf8!
- threat
- 1.Sf3+?
- Keys
- 1.Bg2!
- threat
- 2.Qxb6#
- 1...Kb5
- 2.Qxb6#
- 1...Rxd6
- 2.Sed7#
- 1...Rb4
- 2.Seg4#
- 1...Rb5
- 2.Qc7#
- 1...Rc6
- 2.Sf3#
- threat
- 1.Bg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD::R1(C)
- R(c);N_GUARD::R1(C),XR(c)
- Tries
- Try
- S(D);CHECK
- Refutation
- Q(b);P_SPINQ(b)
- Try
- S(D);CHECK
- Vars
- Q(b);P_SPINQ(b)::QAB1(K),XR(h)
- B(a);XR(E)::QAB1(K),XR(h)
- Refutation
- K(f);S_FLIGHT
- Try
- S(D);CHECK
- Refutation
- K(f);S_FLIGHT
- Try
- S(D);CHECK
- Refutation
- K(f);S_FLIGHT,XP(G)
- Try
- B(F);
- Threat
- QAB1(K),XR(h)
- Vars
- K(f);P-FLIGHT::QAR1(K),XR(h)
- R(h);SBLOCK,XP(G)::R(E)+S(D),DCHECK
- R(h);SBLOCK::R(E)+S(D)
- R(h);N_GUARD,SBLOCK::QAR2(K)
- Refutation
- R(h);
- Try
- B(F);
- Threat
- QAB1(K),XR(h)
- Vars
- K(f);P-FLIGHT::QAR1(K),XR(h)
- R(h);SBLOCK,XP(G)::R(E)+S(D),DCHECK
- R(h);SBLOCK::R(E)+S(D)
- R(h);N_GUARD,SBLOCK::QAR2(K)
- Refutation
- R(h);
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(B)::QAB1(K),XR(h)
- B(j);XS(H)::QAB1(K),XR(h)
- Q(b);::QAB1(K),XR(h)
- Refutation
- S(e);XR(C)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(h);SBLOCK,XB(F)::R(E)+S(D),DCHECK
- P(i);SBLOCK,XB(F)::R(E)+S(D),DCHECK
- Q(b);::QAB(K)+P(G)
- B(a);::QAB(K)+P(G)
- S(e);::QAB(K)+P(G)
- B(j);::S(H)
- Refutation
- B(j);XS(H)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- R(h);SBLOCK,XB(F)::R(E)+S(D),DCHECK
- B(j);XS(H)::QAB1(K),XR(h)
- Q(b);::QAB1(K),XR(h)
- B(a);::QAB1(K),XR(h)
- S(e);::QAB1(K),XR(h)
- R(h);::S(H)
- Refutation
- B(j);XQ(J)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- R(h);SBLOCK,XB(F)::R(E)+S(D),DCHECK
- B(j);XS(H)::QAB1(K),XR(h)
- Q(b);::QAB1(K),XR(h)
- B(a);::QAB1(K),XR(h)
- S(e);::QAB1(K),XR(h)
- R(h);::S(H)
- Refutation
- B(j);XB(J)
- Try
- Actual
- B(F);
- Threat
- QAB1(K),XR(h)
- Vars
- K(f);P-FLIGHT::QAR1(K),XR(h)
- R(h);SBLOCK,XP(G)::R(E)+S(D),DCHECK
- R(h);SBLOCK::R(E)+S(D)
- R(h);N_GUARD,SBLOCK::QAR2(K)
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).