MESON Chess Problem Database
Problem Display
PID: 250638 (4n1b1/3p2bp/B4n2/Br3Q1p/1q3p1K/Npk2N1p/4R2r/8 w - - 0 1)
Goldschmeding, Cornelis
Schakend Nederland, 1978
#2
7 + 14
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxa5
- 2.Sb1#
- 2.Qd3#
- 1...Rc5
- 2.Sb1#
- 2.Qd3#
- 1...Rd5
- 2.Sb1#
- 1...Re5
- 2.Sb1#
- 2.Qd3#
- 2.Qxe5#
- 1...Rxf5
- 2.Sb1#
- 1...Rb6
- 2.Sb1#
- 2.Qd3#
- 2.Qe5#
- 1...Rb7
- 2.Sb1#
- 2.Qd3#
- 2.Qe5#
- 1...Rb8
- 2.Sb1#
- 2.Qd3#
- 2.Qe5#
- 1...Bc4
- 2.Sb1#
- 1...b2
- 2.Qc2#
- 1...Rxa5
- Tries
- 1.Bxb4+?
- 1...Rxb4
- 2.Sb1#
- 2.Qd3#
- 1...Kxb4!
- 1...Rxb4
- 1.Qe4?
- threat
- 2.Sb1#
- 2.Sxb5#
- 2.Qd4#
- 1...Qxa5
- 2.Sb1#
- 2.Qd4#
- 1...Rxe2
- 2.Qd4#
- 1...Rxa5
- 2.Sb1#
- 2.Qd3#
- 1...b2
- 2.Qc2#
- 1...Rh1
- 2.Sxb5#
- 2.Qd4#
- 1...Rc5
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 2.Qd4#
- 1...Rd5
- 2.Sb1#
- 2.Bxb4#
- 2.Qxb4#
- 2.Qc4#
- 1...Re5
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 2.Qd4#
- 2.Qxe5#
- 1...Rf5
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 2.Qd4#
- 1...Rg5
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 2.Qd4#
- 1...Rb6
- 2.Sb1#
- 2.Qd3#
- 2.Qd4#
- 2.Qe5#
- 1...Rb7
- 2.Sb1#
- 2.Qd3#
- 2.Qd4#
- 2.Qe5#
- 1...Rb8
- 2.Sb1#
- 2.Qd3#
- 2.Qd4#
- 2.Qe5#
- 1...Bc4
- 2.Sb1#
- 2.Qxc4#
- 2.Qd4#
- 1...Sg4
- 2.Sb1#
- 2.Sxb5#
- 1...Sd5
- 2.Sb1#
- 2.Sxb5#
- 2.Qc4#
- 1...Sd6
- 2.Sb1#
- 2.Qd4#
- 1...Sc7
- 2.Sb1#
- 2.Qd4#
- 1...Sxe4!
- threat
- 1.Qxb5?
- threat
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 2.Qe5#
- 1...Qxa5
- 2.Sb1#
- 2.Qxa5#
- 1...Bc4
- 2.Qxc4#
- 1...b2
- 2.Qd3#
- 2.Qxb4#
- 1...Rh1
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 2.Qe5#
- 1...Bf8
- 2.Sb1#
- 2.Qd3#
- 2.Qe5#
- 1...Bd5
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 1...Se4
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 1...Sg4
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 1...Sd5
- 2.Sb1#
- 2.Qd3#
- 2.Qc4#
- 2.Qc5#
- 1...d5
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qc6#
- 2.Qxb4#
- 2.Qc5#
- 1...d6
- 2.Sb1#
- 2.Bxb4#
- 2.Qd3#
- 2.Qxb4#
- 1...Rxe2!
- threat
- 1.Qc5+?
- 1...Rxc5
- 2.Sb1#
- 1...Bc4
- 2.Qd4#
- 2.Qxc4#
- 1...Kd3!
- 1...Rxc5
- 1.Qe5+?
- 1...Rxe5
- 2.Sb1#
- 1...Kd3!
- 1...Rxe5
- 1.Bxb4+?
- Keys
- 1.Qxf4!
- threat
- 2.Qd4#
- 1...Kd3
- 2.Re3#
- 1...Rxa5
- 2.Sb1#
- 1...b2
- 2.Re3#
- 1...Rd5
- 2.Sb1#
- 2.Bxb4#
- 2.Qxb4#
- 2.Qc4#
- 1...Se4
- 2.Qe3#
- 1...Sg4
- 2.Qd2#
- 1...Sd5
- 2.Qc4#
- threat
- 1.Qxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- R(g);::S(B)
- R(g);XQ(F)::S(B)
- B(n);SBLOCK::S(B)
- P(b);N_GUARD::QAR1(F)
- Tries
- Try
- B(E);CHECK,XQ(e)
- Refutation
- K(c);S_FLIGHT,XB(E)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(a);XR(A)::QAB1(F)
- P(b);N_GUARD::QAR1(F)
- Refutation
- S(i);XQ(F)
- Try
- Q(F);XR(g)
- Threat
- DUALS(5)
- Vars
- B(n);N_GUARD::QAR1(F),XB(n)
- Refutation
- R(a);XR(A)
- Try
- Q(F);CHECK
- Vars
- R(g);XQ(F)::S(B)
- Refutation
- K(c);N_SPINQ(e),P-FLIGHT,P_SPINR(g)
- Try
- Q(F);CHECK
- Vars
- R(g);XQ(F)::S(B)
- Refutation
- K(c);N_SPINQ(e),P-FLIGHT,P_SPINR(g)
- Try
- Actual
- Q(F);P_SPINQ(F),XP(f)
- Threat
- QAB1(F)
- Vars
- K(c);N_GUARD,N_SPINQ(e),P-FLIGHT,P_SPINR(g)::R1(A)
- R(g);N_SPINQ(e),XB(E)::S(B)
- P(b);SBLOCK::R(A)
- S(i);N_PINQ(F)::QAR2(F)
- S(i);N_PINQ(F)::QAB1(F)
- S(i);S_CUTB(n)::QAR1(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).