MESON Chess Problem Database
Problem Display
PID: 176570 (4K3/7N/4k1n1/2Pqrb2/2B2R2/8/8/B3Q3 w - - 0 1)
Schattner, Richard
Weissauer, Hermann
Schach-Echo, 1975
#2
7 + 5
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxe1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sxf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Rxe1
- Tries
- 1.Sf8+?
- 1...Sxf8
- 2.Qxe5#
- 1...Kf6+!
- 1...Sxf8
- 1.Bb2?
- 1...Rxe1
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe1
- 1.Bc3?
- 1...Rxe1
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe1
- 1.Bd4?
- 1...Rxe1
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe1
- 1.Ba2?
- 1...Rxe1
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Qb3
- 2.Bxb3#
- 1...Qc4
- 2.Bxc4#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxa2!
- 1...Rxe1
- 1.Bb3?
- 1...Rxe1
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Qc4
- 2.Bxc4#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxb3!
- 1...Rxe1
- 1.Rf1?
- 1...Rxe1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe1
- 1.Rf2?
- 1...Rxe1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe1
- 1.Rf3?
- 1...Rxe1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe1
- 1.Qc3?
- 1...Sxf4
- 2.Qxe5#
- 1...Re1
- 2.Sg5#
- 2.Qf6#
- 1...Re2
- 2.Sg5#
- 2.Qf6#
- 1...Re3
- 2.Sg5#
- 2.Qf6#
- 1...Re4
- 2.Sg5#
- 2.Qf6#
- 1...Bb1
- 2.Rf6#
- 1...Bc2
- 2.Rf6#
- 1...Bd3
- 2.Rf6#
- 1...Bh3
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Sxf4
- 1.Qe2?
- 1...Rxe2
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Re3
- 2.Sg5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe2
- 1.Qe3?
- 1...Rxe3
- 2.Sg5#
- 1...Sxf4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Re4
- 2.Sg5#
- 1...Bb1
- 2.Sg5#
- 2.Rf6#
- 1...Bc2
- 2.Sg5#
- 2.Rf6#
- 1...Bd3
- 2.Sg5#
- 2.Rf6#
- 1...Bh3
- 2.Sg5#
- 2.Rf6#
- 1...Be4
- 2.Rf6#
- 1...Bg4
- 2.Sg5#
- 2.Rf6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...Qxc4!
- 1...Rxe3
- 1.Sf8+?
- Keys
- 1.Qe4!
- threat
- 2.Bxd5#
- 1...Qxc4
- 2.Qc6#
- 1...Rxe4
- 2.Sg5#
- 1...Bxe4
- 2.Rf6#
- 1...Sxf4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(b);N_SPINR(b),XQ(B)::S(F)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- S(e);N_GUARD::QAR1(B),XR(b)
- Tries
- Try
- S(F);CHECK
- Vars
- S(e);XS(F)::QAR1(B),XR(b)
- Refutation
- K(d);CHECK,N_SPINQ(a),P-FLIGHT,P_SPINB(c)
- Try
- B(A);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- B(A);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- B(A);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- B(C);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- Q(a);OGATEB::B(C),XQ(a)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- B(C);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- Q(a);OGATEB::B(C),XQ(a)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- R(D);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- R(D);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- R(D);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- Q(B);N_PINR(b)
- Vars
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- B(c);OGATE::R1(D)
- S(e);N_GUARD::QAR1(B),XR(b)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- Q(B);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- S(e);N_GUARD::QAR1(B),XR(b)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- Q(B);
- Vars
- R(b);N_SPINR(b),XQ(B)::S(F)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- S(e);N_GUARD::QAR1(B),XR(b)
- R(b);::S(F)
- B(c);N_SPINR(b),OGATE::R1(D)
- Refutation
- Q(a);N_SPINQ(a),XB(C)
- Try
- Actual
- Q(B);
- Threat
- B(C),XQ(a)
- Vars
- Q(a);N_SPINQ(a),OGATE,XB(C)::QAR2(B)
- R(b);N_SPINR(b),XQ(B)::S(F)
- B(c);N_SPINR(b),OGATE,XQ(B)::R1(D)
- S(e);N_GUARD,XR(D)::QAR1(B),XR(b)
- S(e);N_GUARD::QAR1(B),XR(b)
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).