MESON Chess Problem Database
Problem Display
PID: 219012 (4R3/8/n1p1P2r/3k1N2/1rn4R/b2P2Q1/2pPpBN1/q2bK2B w - - 0 1)
Strerath, Otto
1st Comm., BCPS 064. Ty., 1948
#2
11 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Sf4#
- 1...Rb1
- 2.dxc4#
- 1...Rb2
- 2.dxc4#
- 1...Rb3
- 2.dxc4#
- 1...Rb5
- 2.dxc4#
- 1...Rb6
- 2.dxc4#
- 1...Rb7
- 2.dxc4#
- 1...Rb8
- 2.dxc4#
- 1...Rxh4
- 2.Sgxh4#
- 1...Sb2
- 2.Qd6#
- 1...Sxd2
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...Se5
- 2.Sf4#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sc5
- 2.Sge3#
- 1...c5
- 2.Sge3#
- 1...Qe5
- Tries
- 1.Bd4?
- threat
- 2.Sge3#
- 2.Sf4#
- 2.Qf3#
- 1...Rxh4
- 2.Sge3#
- 2.Sf4#
- 2.Sgxh4#
- 1...Rxe6
- 2.Sge3#
- 2.Sf4#
- 1...Sxd2
- 2.Sge3#
- 2.Sf4#
- 2.Sfe3#
- 2.Qe5#
- 2.Qd6#
- 1...Se3
- 2.Sgxe3#
- 2.Sf4#
- 2.Sfxe3#
- 2.Qe5#
- 2.Qd6#
- 2.Qf3#
- 1...Se5
- 2.Sge3#
- 2.Sf4#
- 2.Qxe5#
- 1...Sd6
- 2.Sge3#
- 2.Sf4#
- 2.Sfe3#
- 2.Qe5#
- 2.Qxd6#
- 1...Sc5
- 2.Sge3#
- 2.Sf4#
- 1...Qxd4!
- threat
- 1.Bb6?
- threat
- 2.Sge3#
- 1...Sxb6
- 2.Qd6#
- 1...Se3
- 2.Sgxe3#
- 2.Sfxe3#
- 2.Qd6#
- 1...Rxb6!
- threat
- 1.Ba7?
- threat
- 2.Sge3#
- 1...Sb6
- 2.Qd6#
- 1...Se3
- 2.Sgxe3#
- 2.Sfxe3#
- 2.Qd6#
- 1...Rb6!
- threat
- 1.Rxh6?
- threat
- 2.Sgh4#
- 2.Se7#
- 1...Sxd2
- 2.Se7#
- 2.Rd8#
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Qe5
- 2.Sf4#
- 1...Qf6
- 2.Sgh4#
- 1...Qg7
- 2.Sgh4#
- 1...Rb1
- 2.Sgh4#
- 1...Rb2
- 2.Sgh4#
- 1...Rb3
- 2.Sgh4#
- 1...Ra4
- 2.Sgh4#
- 1...Rb5
- 2.Sgh4#
- 1...Rb6
- 2.Sgh4#
- 1...Rb7
- 2.Sgh4#
- 1...Rb8
- 2.Sgh4#
- 1...Sb2
- 2.Se7#
- 2.Rd8#
- 2.Qd6#
- 1...Sa5
- 2.Se7#
- 2.Rd8#
- 2.Qd6#
- 1...Se5
- 2.Sf4#
- 1...Sb6
- 2.Se7#
- 2.Qd6#
- 1...Sd6
- 2.Se7#
- 2.Qxd6#
- 1...Sc5
- 2.Sge3#
- 2.Se7#
- 1...Qd4!
- threat
- 1.Rd8+?
- 1...Sd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Kxe6!
- 1...Sd6
- 1.Qe5+?
- 1...Qxe5
- 2.Sf4#
- 1...Sxe5
- 2.Sf4#
- 1...Kxe5!
- 1...Qxe5
- 1.Qe3?
- threat
- 2.Sf4#
- 2.Qe4#
- 1...Rxh4
- 2.Sf4#
- 2.Sgxh4#
- 1...Rxe6
- 2.Sf4#
- 2.Qxe6#
- 1...Sxd2
- 2.Sf4#
- 2.Rd8#
- 1...Qd4
- 2.Qxd4#
- 1...Qe5
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 2.Rd8#
- 1...Sa5
- 2.Sf4#
- 2.Rd8#
- 1...Se5
- 2.Sf4#
- 1...Sb6
- 2.Sf4#
- 1...Sd6
- 2.Sf4#
- 2.Se7#
- 1...Sc5
- 2.Sf4#
- 2.Qxc5#
- 1...Sxe3!
- threat
- 1.d4?
- threat
- 2.Sge3#
- 2.Sf4#
- 2.Qf3#
- 1...Rxh4
- 2.Sge3#
- 2.Sf4#
- 2.Sgxh4#
- 1...Rxe6
- 2.Sge3#
- 2.Sf4#
- 1...Sxd2
- 2.Sge3#
- 2.Sfe3#
- 1...Sb2
- 2.Sge3#
- 2.Sfe3#
- 1...Se3
- 2.Sgxe3#
- 2.Sfxe3#
- 1...Sa5
- 2.Sge3#
- 2.Sfe3#
- 1...Se5
- 2.Sge3#
- 1...Sb6
- 2.Sge3#
- 2.Sfe3#
- 1...Sd6
- 2.Sge3#
- 2.Sfe3#
- 1...Qc3
- 2.Sge3#
- 2.Sf4#
- 1...Rb3
- 2.Sge3#
- 2.Sf4#
- 1...Sc5
- 2.Sge3#
- 2.Sf4#
- 1...Qxd4!
- threat
- 1.Bd4?
- Keys
- 1.Rh5!
- threat
- 2.Sgh4#
- 1...Rxe6
- 2.Se7#
- 1...Sxd2
- 2.Qd6#
- 1...Qd4
- 2.Sfe3#
- 1...Se3
- 2.Qd6#
- 1...Qe5
- 2.Sf4#
- 1...Sb2
- 2.Sxh6#
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...Se5
- 2.Sf4#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sc5
- 2.Sge3#
- threat
- 1.Rh5!
This is a version of 44247
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(a);SBLOCK::B(B)+S(E),DCHECK
- R(f);N_GUARD::P(F),XS(g)
- R(k);XR(H)::B(B)+S(E),XR(k)
- S(g);N_GUARD::QAR1(G)
- S(g);N_GUARD,XP(C)::QAR1(G)
- S(g);SBLOCK::B(B)+S(E),DCHECK
- S(g);N_GUARD::QAR1(G),XS(g)
- S(i);SBLOCK::B(B)+S(E),DCHECK
- P(j);SBLOCK::B(B)+S(E),DCHECK
- Tries
- Try
- B(D);
- Threat
- DUALS(3)
- Refutation
- Q(a);XB(D)
- Try
- B(D);
- Threat
- B(B)+S(E),DCHECK
- Vars
- S(g);N_GUARD,XB(D)::QAR1(G)
- Refutation
- R(f);XB(D)
- Try
- B(D);
- Threat
- B(B)+S(E),DCHECK
- Vars
- S(g);N_GUARD::QAR1(G)
- Refutation
- R(f);
- Try
- R(H);XR(k)
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD::QAR1(G)
- Q(a);SBLOCK::B(B)+S(E),DCHECK
- Q(a);::B(B)+S(E)
- R(f);::B(B)+S(E)
- S(g);SBLOCK::B(B)+S(E),DCHECK
- Refutation
- Q(a);
- Try
- R(K);CHECK
- Refutation
- K(h);S_FLIGHT,XP(J)
- Try
- Q(G);CHECK
- Vars
- Q(a);SBLOCK,XQ(G)::B(B)+S(E),DCHECK
- S(g);SBLOCK,XQ(G)::B(B)+S(E),DCHECK
- Refutation
- K(h);P-FLIGHT,XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::QAR1(G),XQ(a)
- Q(a);::B(B)+S(E),DCHECK
- S(g);::B(B)+S(E),DCHECK
- Refutation
- S(g);XQ(G)
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- S(g);::B(B)+S(E),DCHECK
- Refutation
- Q(a);XP(F)
- Try
- Actual
- R(H);
- Threat
- B(B)+S(E)
- Vars
- R(k);SBLOCK,XP(J)::R(H)+S(I),DCHECK
- S(g);N_GUARD,XP(C)::QAR1(G)
- Q(a);SBLOCK::R(H)+S(I),DCHECK
- S(g);N_GUARD::QAR1(G)
- Q(a);SBLOCK::B(B)+S(E),DCHECK
- S(g);SBLOCK::B(B)+S(E),DCHECK
- S(g);N_GUARD::QAR1(G),XS(g)
- S(i);SBLOCK::B(B)+S(E),DCHECK
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).