MESON Chess Problem Database
Problem Display
PID: 276248 (8/1n2Rn2/1Bbp4/p1r3NK/3k2P1/N1R5/4r1B1/b1Q5 w - - 0 1)
Lies, Heinz
Die Schwalbe, 1933
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qd2#
- 1...Ra2
- 2.Qe3#
- 1...Rb2
- 2.Qe3#
- 1...Rc2
- 2.Qe3#
- 1...Rd2
- 2.Qxd2#
- 1...Rf2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Qd2#
- 1...Re5
- 2.Qd2#
- 1...Bb5
- 2.Sxb5#
- 1...Bd5
- 2.Sb5#
- 1...Se5
- 2.Se6#
- 1...d5
- 2.Sf3#
- 1...Re1
- Tries
- 1.Sc2+?
- 1...Rxc2
- 2.Qe3#
- 1...Kxc3!
- 1...Rxc2
- 1.Rg3?
- threat
- 2.Qc4#
- 1...Rxe7
- 2.Qxa1#
- 1...Re6
- 2.Qxa1#
- 1...Rc2
- 2.Qe3#
- 1...Bc3
- 2.Qxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bd5
- 2.Sb5#
- 1...Se5
- 2.Se6#
- 1...d5!
- threat
- 1.Rh3?
- threat
- 2.Qc4#
- 1...Rxe7
- 2.Qxa1#
- 1...Re6
- 2.Qxa1#
- 1...Rc2
- 2.Qe3#
- 1...Bc3
- 2.Qxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bd5
- 2.Sb5#
- 1...Se5
- 2.Se6#
- 1...d5!
- threat
- 1.Rxe2?
- threat
- 2.Qd2#
- 2.Qe3#
- 1...Bxc3
- 2.Qe3#
- 1...Bxg2
- 2.Qd2#
- 1...Bf3
- 2.Qd2#
- 1...Bb5
- 2.Sxb5#
- 2.Qe3#
- 1...Se5
- 2.Se6#
- 2.Qe3#
- 1...Be4!
- threat
- 1.Ree3?
- threat
- 2.Rcd3#
- 2.Rc4#
- 1...Rxg2
- 2.Rcd3#
- 1...Rxe3
- 2.Qxe3#
- 1...Bxc3
- 2.Qxc3#
- 1...Bxg2
- 2.Rcd3#
- 1...Bf3
- 2.Rcd3#
- 1...d5
- 2.Sf3#
- 2.Se6#
- 2.Rcd3#
- 1...Rc2
- 2.Sxc2#
- 2.Rcd3#
- 1...Rd2
- 2.Qxd2#
- 1...Bb5
- 2.Sxb5#
- 1...Bd5
- 2.Sb5#
- 2.Rcd3#
- 1...Se5
- 2.Se6#
- 1...Be4!
- threat
- 1.Qd1+?
- 1...Rd2
- 2.Qxd2#
- 1...Kxc3!
- 1...Rd2
- 1.Sc2+?
- Keys
- 1.Rb3!
- threat
- 2.Qc4#
- 1...Rxe7
- 2.Qxa1#
- 1...Re6
- 2.Qxa1#
- 1...Bc3
- 2.Qxc3#
- 1...Rc2
- 2.Qe3#
- 1...Bb5
- 2.Sxb5#
- 1...Bd5
- 2.Sb5#
- 1...Se5
- 2.Se6#
- 1...d5
- 2.Sf3#
- threat
- 1.Rb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- R(b);N_GUARD::QAR2(A)
- R(b);N_GUARD::QAB1(A)
- R(b);N_GUARD::QAR2(A),XR(b)
- R(b);N_GUARD::QAB1(A),XR(b)
- B(f);N_GUARD::S(C),XB(f)
- B(f);N_GUARD,N_PINS(F)::S(C)
- S(i);N_PINS(F),SBLOCK::S(F)
- P(g);N_PINS(F),SBLOCK::S(F)
- Tries
- Try
- S(C);CHECK
- Vars
- R(b);XS(C)::QAB1(A)
- Refutation
- K(c);N_SPINR(e),S_FLIGHT,XR(D)
- Try
- R(D);
- Threat
- QAR1(A)
- Vars
- R(b);N_GUARD,XR(I)::QAB(A),XB(a)
- R(b);N_GUARD::QAB(A),XB(a)
- R(b);N_GUARD::QAB1(A)
- B(a);N_GUARD::QAB1(A),XB(a)
- B(f);N_GUARD::S(C),XB(f)
- B(f);N_GUARD,N_PINS(F)::S(C)
- S(i);N_PINS(F),SBLOCK::S(F)
- Refutation
- P(g);N_PINS(F)
- Try
- R(D);
- Threat
- QAR1(A)
- Vars
- R(b);N_GUARD,XR(I)::QAB(A),XB(a)
- R(b);N_GUARD::QAB(A),XB(a)
- R(b);N_GUARD::QAB1(A)
- B(a);N_GUARD::QAB1(A),XB(a)
- B(f);N_GUARD::S(C),XB(f)
- B(f);N_GUARD,N_PINS(F)::S(C)
- S(i);N_PINS(F),SBLOCK::S(F)
- Refutation
- P(g);N_PINS(F)
- Try
- R(I);XR(b)
- Threat
- DUALS(2)
- Vars
- B(a);XR(D)::QAB1(A)
- B(f);XB(B)::QAR2(A)
- B(f);P_PINP(E)::QAR2(A)
- Refutation
- B(f);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- R(b);XB(B)::R1(D)
- R(b);OGATE,XR(I)::QAB1(A),XR(b)
- B(a);OGATE,XR(D)::QAB1(A),XB(a)
- B(f);XB(B)::R1(D)
- B(f);P_PINP(E)::R1(D)
- R(b);N_GUARD::QAR2(A),XR(b)
- B(f);N_GUARD::S(C),XB(f)
- S(i);N_PINS(F)::S(F)
- Refutation
- B(f);
- Try
- Q(A);CHECK
- Vars
- R(b);N_GUARD,N_SPINR(e),P_SPINR(b)::QAR2(A),XR(b)
- Refutation
- K(c);N_SPINR(e),S_FLIGHT,XR(D)
- Try
- Actual
- R(D);
- Threat
- QAR1(A)
- Vars
- R(b);N_GUARD,XR(I)::QAB(A),XB(a)
- R(b);N_GUARD::QAB(A),XB(a)
- B(a);N_GUARD::QAB1(A),XB(a)
- R(b);N_GUARD::QAB1(A)
- B(f);N_GUARD::S(C),XB(f)
- B(f);N_GUARD,N_PINS(F)::S(C)
- S(i);N_PINS(F),SBLOCK::S(F)
- P(g);N_PINS(F),SBLOCK::S(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).