MESON Chess Problem Database
Problem Display
PID: 17743 (2qR4/1rp1p1NK/3n1B2/2n1R2p/3k4/N3b3/2P1B3/1b2Q3 w - - 0 1)
Goldschmeding, Cornelis
1st Prize, Die Schwalbe, 1949
#2
9 + 10
| 742 | Problem (Zagreb) | 1951 |
| 3105 | FIDE Album (1945-1955) | 1964 |
SOLUTION
- SOUND
- Sets
- 1...Qf5+
- 2.Sxf5#
- 1...Qa8
- 2.Sf5#
- 1...Qb8
- 2.Sf5#
- 1...Rb4
- 2.Qxb4#
- 1...Rb5
- 2.Sxb5#
- 1...Ra7
- 2.Sb5#
- 2.Qb4#
- 1...Ba2
- 2.c3#
- 1...Bxc2+
- 2.Sxc2#
- 1...Sd3
- 2.c3#
- 1...Se6
- 2.Sf5#
- 1...Sd7
- 2.Se6#
- 1...Qf5+
- Tries
- 1.Bc4?
- threat
- 2.Rxe7#
- 2.Qxe3#
- 1...Qf5+
- 2.Sxf5#
- 1...exf6
- 2.Qxe3#
- 1...Bd2
- 2.Re4#
- 2.Rd5#
- 2.Rxe7#
- 1...Qh3
- 2.Rxe7#
- 1...Qe6
- 2.Qxe3#
- 1...Rb3
- 2.Rxe7#
- 1...Bc1
- 2.Re4#
- 2.Rd5#
- 2.Rxe7#
- 1...Bg1
- 2.Re4#
- 2.Rd5#
- 2.Rxe7#
- 1...Bf2
- 2.Re4#
- 2.Rd5#
- 2.Rxe7#
- 1...Bf4
- 2.Re4#
- 2.Rd5#
- 1...Bg5
- 2.Re4#
- 2.Rd5#
- 1...Bh6
- 2.Re4#
- 2.Rd5#
- 2.Rxe7#
- 1...Sb3
- 2.Qxe3#
- 1...Sd3
- 2.c3#
- 1...Sa4
- 2.Qxe3#
- 1...Se4
- 2.Rd5#
- 1...Sa6
- 2.Qxe3#
- 1...Se6
- 2.Sf5#
- 2.Qxe3#
- 1...Sd7
- 2.Se6#
- 2.Qxe3#
- 1...e6
- 2.Rxe6#
- 2.Qxe3#
- 1...Bxc2+!
- threat
- 1.Bb5?
- threat
- 2.Qb4#
- 2.Qxe3#
- 1...Qf5+
- 2.Sxf5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qxd8
- 2.Qxe3#
- 1...Rxb5
- 2.Qxe3#
- 1...exf6
- 2.Qxe3#
- 1...Qh3
- 2.Qb4#
- 1...Qe6
- 2.Qxe3#
- 1...Qd7
- 2.Qxe3#
- 1...Ba2
- 2.Qa1#
- 2.Qxe3#
- 2.c3#
- 1...Bc1
- 2.Qb4#
- 1...Bg1
- 2.Qb4#
- 1...Bf2
- 2.Qb4#
- 1...Bf4
- 2.Qb4#
- 1...Bg5
- 2.Qb4#
- 1...Bh6
- 2.Qb4#
- 1...Sd3
- 2.c3#
- 1...Se4
- 2.Qb4#
- 1...Sa6
- 2.Qxe3#
- 1...Sd7
- 2.Se6#
- 2.Qxe3#
- 1...Bd2!
- threat
- 1.Qd2+?
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Bxd2!
- 1...Sd3
- 1.Bc4?
- Keys
- 1.Qa5!
- threat
- 2.Qxc5#
- 1...Qf5+
- 2.Sxf5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Rb5
- 2.Sxb5#
- 1...Sb3
- 2.Rxe7#
- 1...Sd3
- 2.c3#
- 1...Sa4
- 2.Rxe7#
- 1...Se4
- 2.Rd5#
- 1...Sa6
- 2.Rxe7#
- 1...Se6
- 2.Sf5#
- 1...Sd7
- 2.Se6#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- Q(j);CHECK,N_GUARD,N_PINP(B)::S(G),XQ(j)
- Q(j);N_GUARD::S(G)
- R(g);N_GUARD::QAR2(A),XR(g)
- R(g);N_GUARD::S(D),XR(g)
- B(a);N_PINP(B)::P(B)
- B(a);CHECK,XP(B)::S(D),XB(a)
- S(d);N_PINP(B)::P(B)
- S(d);S_CUTQ(j)::S(G)
- S(d);N_GUARD,N_SPINS(f),S_CUTQ(j)::S(G)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD,N_PINP(B)::S(G),XQ(j)
- P(i);XB(F)::QAB1(A),XB(b)
- Q(j);::B(F)+R(E),XP(i)
- Q(j);::QAB1(A),XB(b)
- R(g);::B(F)+R(E),XP(i)
- S(d);::QAB1(A),XB(b)
- S(d);N_PINP(B)::P(B)
- S(d);N_PINP(B),SBLOCK::B(F)+R(E),DCHECK
- Refutation
- B(a);CHECK,XP(B)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD,N_PINP(B)::S(G),XQ(j)
- B(a);CHECK,XP(B)::S(D),XB(a)
- Q(j);N_SPINS(f),XR(I)::QAB1(A),XB(b)
- R(g);XB(C)::QAB1(A),XB(b)
- P(i);XB(F)::QAB1(A),XB(b)
- Q(j);::QAR2(A)
- Q(j);::QAB1(A),XB(b)
- Q(j);N_SPINS(f)::QAB1(A),XB(b)
- B(b);::QAR2(A)
- S(d);N_PINP(B)::P(B)
- S(d);N_PINP(B)::QAR2(A)
- S(d);::QAB1(A),XB(b)
- Refutation
- B(b);
- Try
- Q(A);CHECK
- Refutation
- B(b);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A),XS(d)
- Vars
- Q(j);CHECK,N_GUARD,N_PINP(B)::S(G),XQ(j)
- B(a);CHECK,XP(B)::S(D),XB(a)
- R(g);N_GUARD::S(D),XR(g)
- S(d);::B(F)+R(E),XP(i)
- S(d);N_PINP(B)::P(B)
- S(d);N_PINP(B),SBLOCK::B(F)+R(E),DCHECK
- S(d);S_CUTQ(j)::S(G)
- S(d);N_GUARD,N_SPINS(f),S_CUTQ(j)::S(G)
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).