MESON Chess Problem Database
Problem Display
PID: 254316 (k2K4/P3R3/P7/3N4/4Q1b1/8/4nB2/2br4 w - - 0 1)
Helm, Eugen
Voigt, ?
Schach-Magazin, 1948
#2
7 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Rf1
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Rg1
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Rh1
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Rxd5+
- 2.Qxd5#
- 1...Bd2
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Bd7
- 2.Sc7#
- 1...Sd4
- 2.Sb6#
- 1...Re1
- Tries
- 1.Bd4?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Sxd4
- 2.Sb6#
- 1...Be3
- 2.Sc3#
- 2.Sxe3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Bf4
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sxf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 1...Bf3
- 2.Sb6#
- 2.Sc7#
- 1...Bf5
- 2.Sb6#
- 2.Sc7#
- 1...Be6
- 2.Sb6#
- 2.Sc7#
- 1...Bd7
- 2.Sc7#
- 1...Bc8
- 2.Sb6#
- 2.Sc7#
- 1...Sc3
- 2.Sxc3#
- 2.Sb6#
- 2.Sc7#
- 1...Sg3
- 2.Sb6#
- 2.Sc7#
- 1...Sf4
- 2.Sxf4#
- 2.Sb6#
- 2.Sc7#
- 1...Rxd4!
- threat
- 1.Rd7?
- threat
- 2.Sb6#
- 2.Sc7#
- 1...Rxd5
- 2.Qxd5#
- 1...Bxd7
- 2.Sc7#
- 1...Rd4
- 2.Sb6#
- 1...Be3
- 2.Sb6#
- 1...Sd4
- 2.Sb6#
- 1...Bg5+!
- threat
- 1.Qb4?
- threat
- 2.Qb7#
- 2.Qb8#
- 1...Bf4
- 2.Qb7#
- 1...Bc8
- 2.Qb8#
- 1...Rxd5+!
- threat
- 1.Qd4?
- threat
- 2.Sb6#
- 2.Sc7#
- 1...Sxd4
- 2.Sb6#
- 1...Bf4
- 2.Sb6#
- 1...Bd7
- 2.Sc7#
- 1...Rxd4!
- threat
- 1.Qe5?
- threat
- 2.Qb8#
- 1...Rxd5+
- 2.Qxd5#
- 1...Bf4!
- threat
- 1.Qe6?
- threat
- 2.Qc6#
- 1...Rxd5+
- 2.Qxd5#
- 1...Sd4
- 2.Sb6#
- 1...Bxe6!
- threat
- 1.Bd4?
- Keys
- 1.Qc4!
- threat
- 2.Qc6#
- 1...Rxd5+
- 2.Qxd5#
- 1...Bd7
- 2.Sc7#
- 1...Bc8
- 2.Qxc8#
- 1...Sd4
- 2.Sb6#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);CHECK,OGATE,P_SPINR(b),XS(C)::QAB(B),XR(b)
- B(d);N_PINS(C)::QAB(B)+S(C),DCHECK
- S(c);N_PINS(C)::QAB(B)+S(C),DCHECK
- Tries
- Try
- B(A);N_SPINS(C)
- Threat
- DUALS(7)
- Vars
- S(c);XB(A)::QAB(B)+S(C),DCHECK
- B(d);::QAB(B)+S(C),DCHECK
- Refutation
- R(b);P_PINS(C),XB(A)
- Try
- R(F);N_SPINS(C)
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,P_PINR(F),P_SPINR(b),XS(C)::QAB(B),XR(b)
- B(d);XR(F)::QAB(B)+S(C),DCHECK
- R(b);::QAB(B)+S(C),DCHECK
- B(a);::QAB(B)+S(C),DCHECK
- S(c);::QAB(B)+S(C),DCHECK
- Refutation
- B(a);CHECK
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB1(B)
- B(d);::QAR1(B)
- Refutation
- R(b);CHECK,XS(C)
- Try
- Q(B);N_SPINS(C)
- Threat
- DUALS(2)
- Vars
- S(c);XQ(B)::S(C)
- B(a);::S(C)
- B(d);::S(C)
- Refutation
- R(b);P_PINS(C),XQ(B)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(b);CHECK,OGATE,XS(C)::QAB(B),XR(b)
- Refutation
- B(a);
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- R(b);CHECK,OGATE,XS(C)::QAB(B),XR(b)
- S(c);N_PINS(C)::S(C)
- Refutation
- B(d);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAB(B)
- Vars
- R(b);CHECK,OGATE,XS(C)::QAB(B),XR(b)
- B(d);N_PINS(C)::S(C)
- B(d);N_GUARD::QAR2(B),XB(d)
- S(c);N_PINS(C)::S(C)
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).