MESON Chess Problem Database
Problem Display
PID: 216 (8/8/8/1q2r3/4Q3/1p4n1/1K1pRrN1/3kB2R w - - 0 1)
Fleck, Ferenc
1/2 Prize, Parallele 50, 1950
#2
6 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxe2
- 2.Qb1#
- 1...Rf1
- 2.Rxd2#
- 1...Rxe2
- 2.Qb1#
- 1...Rf3
- 2.Rxd2#
- 1...Rf4
- 2.Rxd2#
- 1...Rff5
- 2.Rxd2#
- 1...Rf6
- 2.Rxd2#
- 1...Rf7
- 2.Rxd2#
- 1...Rf8
- 2.Rxd2#
- 1...Sxe2
- 2.Se3#
- 1...Sf5
- 2.Bxf2#
- 1...Sh5
- 2.Bxf2#
- 1...dxe1Q
- 2.Rxe1#
- 1...dxe1S
- 2.Rxe1#
- 1...dxe1B
- 2.Rxe1#
- 1...dxe1R
- 2.Rxe1#
- 1...Qxe2
- Tries
- 1.Bxf2+?
- 1...Sf1
- 2.Rxf1#
- 1...Sxh1!
- 1...Sf1
- 1.Rxf2?
- threat
- 2.Se3#
- 2.Rxd2#
- 2.Qb1#
- 1...Rxe4
- 2.Rxd2#
- 1...Sxh1
- 2.Rxd2#
- 2.Qb1#
- 1...Sxe4
- 2.Se3#
- 1...dxe1Q
- 2.Se3#
- 2.Rxe1#
- 2.Qb1#
- 1...dxe1S
- 2.Se3#
- 2.Rxe1#
- 2.Qb1#
- 1...dxe1B
- 2.Se3#
- 2.Rxe1#
- 2.Qb1#
- 1...dxe1R
- 2.Se3#
- 2.Rxe1#
- 2.Qb1#
- 1...Qf1
- 2.Rxd2#
- 2.Qb1#
- 1...Qe2
- 2.Qb1#
- 1...Qc4
- 2.Se3#
- 2.Rxd2#
- 1...Qc6
- 2.Se3#
- 2.Rxd2#
- 1...Qd7
- 2.Se3#
- 2.Qb1#
- 1...Qb4
- 2.Se3#
- 2.Qb1#
- 1...Qa5
- 2.Se3#
- 2.Qb1#
- 1...Qc5
- 2.Rxd2#
- 1...Qd5
- 2.Se3#
- 2.Qb1#
- 1...Qb6
- 2.Rxd2#
- 2.Qb1#
- 1...Rc5
- 2.Se3#
- 2.Rxd2#
- 1...Rd5
- 2.Se3#
- 2.Qb1#
- 1...Sf1
- 2.Qb1#
- 1...Se2
- 2.Se3#
- 1...Sf5
- 2.Rxd2#
- 2.Qb1#
- 1...Qd3!
- threat
- 1.Qg4?
- threat
- 2.Rxd2#
- 1...Rfxe2
- 2.Bxg3#
- 1...Rexe2
- 2.Se3#
- 1...Sxe2
- 2.Bxf2#
- 1...dxe1Q
- 2.Rxe1#
- 1...dxe1S
- 2.Rxe1#
- 1...dxe1B
- 2.Rxe1#
- 1...dxe1R
- 2.Rxe1#
- 1...Qxe2!
- threat
- 1.Bxf2+?
- Keys
- 1.Qf3!
- threat
- 2.Rxd2#
- 1...Qxe2
- 2.Qxb3#
- 1...Rfxe2
- 2.Bxg3#
- 1...Rexe2
- 2.Se3#
- 1...Sxe2
- 2.Bxf2#
- 1...dxe1Q
- 2.Rxe1#
- 1...dxe1S
- 2.Rxe1#
- 1...dxe1B
- 2.Rxe1#
- 1...dxe1R
- 2.Rxe1#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(f);SBLOCK,XR(D)::QAR2(F)
- R(c);N_GUARD::R1(D),XP(b)
- R(c);SBLOCK,XR(D)::QAR2(F)
- S(e);SBLOCK,XR(D)::S(E)
- S(e);N_GUARD::R(B)+B(A),XR(c)
- P(b);OGATE,P_PINR(D),P_SPINQ(b),XB(A)::R1(B),XQ(b)
- P(b);OGATE,P_PINR(D),P_SPINS(b),XB(A)::R1(B),XS(b)
- P(b);OGATE,P_PINR(D),P_SPINB(b),XB(A)::R1(B),XB(b)
- P(b);OGATE,P_PINR(D),P_SPINR(b),XB(A)::R1(B),XR(b)
- Tries
- Try
- B(A);CHECK,XR(c)
- Vars
- S(e);N_GUARD,P_SPINS(e)::R(B),XS(e)
- Refutation
- S(e);XR(B)
- Try
- R(D);XR(c)
- Threat
- DUALS(3)
- Vars
- R(g);XQ(F)::R1(D),XP(b)
- S(e);XQ(F)::S(E)
- Q(f);::QAR2(F)
- Q(f);::R1(D),XP(b)
- S(e);::QAR2(F)
- S(e);::S(E)
- Refutation
- Q(f);
- Try
- Q(F);
- Threat
- QAB(F)+R(D),DCHECK,XP(b)
- Vars
- R(c);OGATE,P_SPINR(c),XR(D)::R(B)+B(A),XS(e)
- R(g);N_GUARD,P_SPINR(g),XR(D)::S(E)
- S(e);N_GUARD,P_SPINS(e),XR(D)::R(B)+B(A),XR(c)
- P(b);OGATE,P_PINR(D),P_SPINQ(b),XB(A)::R1(B),XQ(b)
- P(b);OGATE,P_PINR(D),P_SPINS(b),XB(A)::R1(B),XS(b)
- P(b);OGATE,P_PINR(D),P_SPINB(b),XB(A)::R1(B),XB(b)
- P(b);OGATE,P_PINR(D),P_SPINR(b),XB(A)::R1(B),XR(b)
- Refutation
- Q(f);P_SPINQ(f),XR(D)
- Try
- Actual
- Q(F);
- Threat
- QAB(F)+R(D),DCHECK,XP(b)
- Vars
- Q(f);N_GUARD,P_SPINQ(f),SBLOCK,XR(D)::QAB(F),XP(d)
- R(c);OGATE,P_SPINR(c),XR(D)::R(B)+B(A),XS(e)
- R(g);N_GUARD,P_SPINR(g),XR(D)::S(E)
- S(e);N_GUARD,P_SPINS(e),XR(D)::R(B)+B(A),XR(c)
- P(b);OGATE,P_PINR(D),P_SPINQ(b),XB(A)::R1(B),XQ(b)
- P(b);OGATE,P_PINR(D),P_SPINS(b),XB(A)::R1(B),XS(b)
- P(b);OGATE,P_PINR(D),P_SPINB(b),XB(A)::R1(B),XB(b)
- P(b);OGATE,P_PINR(D),P_SPINR(b),XB(A)::R1(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).