MESON Chess Problem Database
Problem Display
PID: 18522 (3B4/r2p3b/3N1R1b/2N1k2q/7r/p1K1PB2/6Q1/7n w - - 0 1)
Schulz, Friedrich Valentin
2nd Prize, Main-Post, 1956
#2
8 + 9
| 3147 | Chess Problems: Introduction to an Art | 1963 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 261 | Mat | 1980 |
| 56 | The Problemist | 1980 |
| 5398 | My Chess Compositions | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Sf7#
- 1...Qf7
- 2.Sxf7#
- 1...Qf5
- 2.Sf7#
- 1...Qg5
- 2.Sf7#
- 1...Rh2
- 2.Sc4#
- 1...Rh3
- 2.Sc4#
- 1...Rc4+
- 2.Sxc4#
- 1...Rd4
- 2.exd4#
- 1...Ra4
- 2.Sxd7#
- 1...Ra5
- 2.Sxd7#
- 1...Ra6
- 2.Sxd7#
- 1...Ra8
- 2.Sxd7#
- 1...Bf4
- 2.Sc4#
- 1...Bd3
- 2.Sxd3#
- 1...Bg8
- 2.Sd3#
- 1...Qg4
- Tries
- 1.Bg4?
- threat
- 2.Sc4#
- 1...Qxg4
- 2.Sf7#
- 1...Be4
- 2.Qxe4#
- 1...Qf7
- 2.Sxf7#
- 1...Ra4
- 2.Sxd7#
- 1...Bd3
- 2.Sxd3#
- 1...Bg8
- 2.Sd3#
- 2.Qe4#
- 1...Rxg4!
- threat
- 1.Bb7?
- threat
- 2.Sxd7#
- 2.Qd5#
- 1...Rc4+
- 2.Sxc4#
- 1...Qd1
- 2.Sxd7#
- 2.Sf7#
- 1...Qf3
- 2.Sxd7#
- 2.Sf7#
- 1...Qg4
- 2.Sf7#
- 2.Qd5#
- 1...Qf7
- 2.Sxf7#
- 1...Qe8
- 2.Qd5#
- 1...Qf5
- 2.Sf7#
- 2.Qd5#
- 1...Rd4
- 2.Sxd7#
- 2.exd4#
- 1...Re4
- 2.Sd3#
- 2.Sxd7#
- 1...Be4
- 2.Sxd7#
- 2.Sc4#
- 1...Bf5
- 2.Qd5#
- 1...Bg8
- 2.Sd3#
- 2.Sxd7#
- 1...Rxb7!
- threat
- 1.Ba8?
- threat
- 2.Qd5#
- 1...Rc4+
- 2.Sxc4#
- 1...Rxa8
- 2.Sxd7#
- 1...Qd1
- 2.Sf7#
- 1...Qf3
- 2.Sf7#
- 1...Qf7
- 2.Sxf7#
- 1...Rd4
- 2.exd4#
- 1...Re4
- 2.Sd3#
- 1...Be4
- 2.Sc4#
- 1...Bg8
- 2.Sd3#
- 1...Rb7!
- threat
- 1.Qa2?
- threat
- 2.Qd5#
- 1...Rc4+
- 2.Sxc4#
- 1...Qxf3
- 2.Sf7#
- 1...Qf7
- 2.Sxf7#
- 1...Rd4
- 2.exd4#
- 1...Re4
- 2.Sd3#
- 1...Bg8
- 2.Sd3#
- 1...Be4!
- threat
- 1.Qd2?
- threat
- 2.Qd5#
- 1...Rc4+
- 2.Sxc4#
- 1...Qxf3
- 2.Sf7#
- 1...Qf7
- 2.Sxf7#
- 1...Rd4
- 2.Qxd4#
- 2.exd4#
- 1...Bd3
- 2.Sxd3#
- 1...Be4
- 2.Sc4#
- 2.Qd4#
- 1...Bg8
- 2.Sd3#
- 1...Re4!
- threat
- 1.Qh2+?
- 1...Rxh2
- 2.Sc4#
- 1...Rf4
- 2.Sc4#
- 1...Bf4
- 2.Sc4#
- 1...Sg3!
- 1...Rxh2
- 1.Qg3+?
- 1...Rf4
- 2.Sc4#
- 1...Bf4
- 2.Sc4#
- 1...Sxg3!
- 1...Rf4
- 1.Qg5+?
- 1...Qxg5
- 2.Sf7#
- 1...Bf5
- 2.Sd3#
- 1...Bxg5!
- 1...Qxg5
- 1.Qg8?
- threat
- 2.Qd5#
- 1...Rc4+
- 2.Sxc4#
- 1...Bxg8
- 2.Sd3#
- 1...Qf7
- 2.Sxf7#
- 1...Rd4
- 2.exd4#
- 1...Re4
- 2.Sd3#
- 1...Be4
- 2.Sc4#
- 1...Qxf3!
- threat
- 1.Bg4?
- Keys
- 1.Bc6!
- threat
- 2.Qd5#
- 1...Rc4+
- 2.Sxc4#
- 1...dxc6
- 2.Re6#
- 1...Qd1
- 2.Sf7#
- 1...Qf3
- 2.Sf7#
- 1...Qf7
- 2.Sxf7#
- 1...Rd4
- 2.exd4#
- 1...Re4
- 2.Sd3#
- 1...Be4
- 2.Sc4#
- 1...Bg8
- 2.Sd3#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- Q(e);N_GUARD::S(F)
- Q(e);N_GUARD::S(F),XQ(e)
- R(c);N_GUARD::S(F)
- R(c);CHECK,N_GUARD::S(F),XR(c)
- R(c);OGATE::P(C),XR(c)
- R(g);N_GUARD::S(E),XP(h)
- B(f);S_CUTR(c)::S(F)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- Tries
- Try
- B(D);
- Threat
- S(F)
- Vars
- Q(e);N_GUARD,XB(D)::S(F)
- B(i);N_GUARD::QAR1(A),XB(i)
- Q(e);N_GUARD::S(F),XQ(e)
- R(g);N_GUARD::S(E),XP(h)
- B(i);N_GUARD::S(E),XB(i)
- Refutation
- R(c);XB(D)
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,N_GUARD::S(F),XR(c)
- Q(e);N_GUARD::S(F),XQ(e)
- Q(e);::QAR1(A)
- B(i);::QAR1(A)
- Refutation
- R(g);XB(D)
- Try
- B(D);
- Threat
- QAR1(A)
- Vars
- R(c);CHECK,N_GUARD::S(F),XR(c)
- R(g);N_GUARD,XB(D)::S(E),XP(h)
- Q(e);N_GUARD::S(F)
- Q(e);N_GUARD,P_PINP(C)::S(F)
- Q(e);N_GUARD::S(F),XQ(e)
- R(c);OGATE::P(C),XR(c)
- R(c);S_CUTB(i)::S(E)
- B(i);S_CUTR(c)::S(F)
- B(i);N_GUARD::S(E)
- Refutation
- R(g);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(c);CHECK,N_GUARD::S(F),XR(c)
- Q(e);N_GUARD,P_PINP(C),XB(D)::S(F)
- Q(e);N_GUARD::S(F),XQ(e)
- R(c);OGATE::P(C),XR(c)
- R(c);S_CUTB(i)::S(E)
- B(i);N_GUARD::S(E)
- Refutation
- B(i);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(c);CHECK,N_GUARD::S(F),XR(c)
- Q(e);N_GUARD,P_PINP(C),XB(D)::S(F)
- Q(e);N_GUARD::S(F),XQ(e)
- B(i);N_GUARD::S(E),XB(i)
- B(i);N_GUARD::S(E)
- Refutation
- R(c);
- Try
- Q(A);CHECK
- Vars
- R(c);XQ(A)::S(F)
- R(c);P_SPINR(c)::S(F)
- B(f);P_SPINB(f)::S(F)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(A);CHECK
- Vars
- R(c);P_SPINR(c)::S(F)
- B(f);P_SPINB(f)::S(F)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);CHECK
- Vars
- Q(e);XQ(A)::S(F)
- B(i);P_SPINB(i)::S(E)
- Refutation
- B(f);XQ(A)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(c);CHECK,N_GUARD::S(F),XR(c)
- B(i);N_GUARD,XQ(A)::S(E)
- Q(e);N_GUARD::S(F),XQ(e)
- R(c);OGATE::P(C),XR(c)
- R(c);S_CUTB(i)::S(E)
- B(i);S_CUTR(c)::S(F)
- Refutation
- Q(e);P_PINP(C),XB(D)
- Try
- Actual
- B(D);
- Threat
- QAR1(A)
- Vars
- R(c);CHECK,N_GUARD::S(F),XR(c)
- P(h);N_GUARD,XB(D)::R1(G)
- Q(e);N_GUARD::S(F)
- Q(e);N_GUARD,P_PINP(C)::S(F)
- Q(e);N_GUARD::S(F),XQ(e)
- R(c);OGATE::P(C),XR(c)
- R(c);S_CUTB(i)::S(E)
- B(i);S_CUTR(c)::S(F)
- B(i);N_GUARD::S(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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