MESON Chess Problem Database
Problem Display
PID: 53987 (Kb4N1/n7/6p1/p1QPk1r1/1N4P1/7r/5R2/1B3R1b w - - 0 1)
Strerath, Otto
Schach, 1951
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxd5+
- 2.Qxd5#
- 1...Sb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...Bxd5+
- Tries
- 1.Sd3+?
- 1...Ke4
- 2.Sf6#
- 1...Rxd3!
- 1...Ke4
- 1.Re1+?
- 1...Be4
- 2.Rxe4#
- 1...Re3!
- 1...Be4
- 1.Re2+?
- 1...Be4
- 2.Rxe4#
- 1...Re3!
- 1...Be4
- 1.Rf4?
- threat
- 2.Qe7#
- 1...Bxd5+
- 2.Qxd5#
- 1...Rf3
- 2.Re4#
- 1...Bf3
- 2.Sd3#
- 1...Rh7
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Bd6
- 2.Qd4#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...axb4!
- threat
- 1.Sd3+?
- Keys
- 1.Rf6!
- threat
- 2.Re6#
- 1...Bxd5+
- 2.Qxd5#
- 1...Rf3
- 2.d6#
- 1...Bf3
- 2.Qc3#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(a);CHECK,OGATE,P_SPINB(a),XP(G)::QAR1(F),XB(a)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD,N_PINP(G)::S(D),XS(g)
- Tries
- Try
- S(D);CHECK
- Vars
- K(d);N_PINP(G),P-FLIGHT::S(I)
- Refutation
- R(b);XS(D)
- Try
- R(B);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::R1(B),XB(a)
- Refutation
- R(b);P_SPINR(b)
- Try
- R(C);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::R1(C),XB(a)
- Refutation
- R(b);P_SPINR(b)
- Try
- R(C);
- Threat
- QAR2(F)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XP(G)::QAR1(F),XB(a)
- R(b);N_PINP(G),S_CUTB(a)::R1(C)
- B(a);S_CUTR(b)::S(D)
- R(b);N_GUARD::S(D)
- B(a);N_GUARD::R1(C),XB(a)
- B(h);SBLOCK::QAB1(F)
- S(g);N_GUARD,N_PINP(G)::S(D),XS(g)
- S(g);N_GUARD::S(D)
- Refutation
- P(c);XS(D)
- Try
- Actual
- R(C);
- Threat
- R1(C)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XP(G)::QAR1(F),XB(a)
- R(b);N_PINP(G)::QAR(F)+P(G)
- B(a);S_CUTR(b)::QAB(F)
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).