MESON Chess Problem Database
Problem Display
PID: 180849 (8/1p6/1P1N2N1/1pB1p2p/pR1q2bR/4k2p/2p1P2P/2K1Q3 w - - 0 1)
Preiswerk, Walther Edouard
Schaffhausen Solving Ty., 1929
#2
10 + 10
| 16108 | Walther Preiswerks Shachprobleme (M. Henneberger) | 1949 |
| 15257 | Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5
- 2.Re4#
- 1...Bxe2
- 2.Rxh3#
- 1...Bf3
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Be6
- 2.Re4#
- 1...Bd7
- 2.Re4#
- 1...Bc8
- 2.Re4#
- 1...a3
- 2.Rb3#
- 1...e4
- 2.Bxd4#
- 1...Qxc5
- Tries
- 1.Kxc2?
- 1...Bf5+
- 2.Sxf5#
- 1...Bxe2
- 2.Rxh3#
- 1...Bf3
- 2.Sf5#
- 1...Be6
- 2.Re4#
- 1...Bd7
- 2.Re4#
- 1...Bc8
- 2.Re4#
- 1...a3
- 2.Rb3#
- 1...e4
- 2.Bxd4#
- 1...Qxc5+!
- 1...Bf5+
- 1.Se7?
- threat
- 2.Sd5#
- 1...Kf4
- 2.Qd2#
- 1...Qxc5
- 2.Re4#
- 1...Bf3
- 2.Sdf5#
- 2.Sef5#
- 1...Be6
- 2.Re4#
- 1...Bxe2!
- threat
- 1.Rxd4?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Re4#
- 2.Rf4#
- 2.Rdxg4#
- 2.Rd5#
- 1...Bxe2
- 2.Rxh3#
- 1...a3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Ra4#
- 2.Rb4#
- 2.Rc4#
- 2.Re4#
- 2.Rf4#
- 2.Rdxg4#
- 2.Rd5#
- 1...Bf3
- 2.Sf5#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rde4#
- 2.Rdf4#
- 2.Rdg4#
- 2.Rd5#
- 1...Bf5
- 2.Sxf5#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rde4#
- 2.Rdf4#
- 2.Rdg4#
- 2.Rd5#
- 1...Be6
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rde4#
- 2.Rdf4#
- 2.Rdg4#
- 2.Rd5#
- 2.Rhe4#
- 1...Bd7
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rde4#
- 2.Rdf4#
- 2.Rdg4#
- 2.Rd5#
- 2.Rhe4#
- 1...Bc8
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rde4#
- 2.Rdf4#
- 2.Rdg4#
- 2.Rd5#
- 2.Rhe4#
- 1...b4
- 2.Sc4#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxb4#
- 2.Rc4#
- 2.Re4#
- 2.Rf4#
- 2.Rdxg4#
- 2.Rd5#
- 1...e4
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rxe4#
- 2.Rd5#
- 1...exd4!
- threat
- 1.Rxb5?
- 1...Bxe2
- 2.Rxh3#
- 1...a3
- 2.Rb3#
- 1...Bf3
- 2.Sc4#
- 2.Sf5#
- 1...Bf5
- 2.Sc4#
- 2.Sxf5#
- 1...Be6
- 2.Re4#
- 1...Bd7
- 2.Sc4#
- 2.Re4#
- 1...Bc8
- 2.Sc4#
- 2.Re4#
- 1...e4
- 2.Sc4#
- 1...Qxc5!
- 1...Bxe2
- 1.Rxh3+?
- 1...Bf3
- 2.Rxf3#
- 1...Bxh3!
- 1...Bf3
- 1.Rxg4?
- threat
- 2.Sf5#
- 2.Rg3#
- 2.Re4#
- 1...e4
- 2.Sf5#
- 2.Bxd4#
- 2.Rg3#
- 2.Rxe4#
- 1...h4
- 2.Sf5#
- 2.Re4#
- 1...hxg4!
- threat
- 1.Qg3+?
- 1...Bf3
- 2.Re4#
- 2.Qxf3#
- 1...Kxe2!
- 1...Bf3
- 1.Qf1?
- 1...Qxc5
- 2.Re4#
- 1...a3
- 2.Rb3#
- 1...Bf3
- 2.Sf5#
- 2.Qxf3#
- 1...Bf5
- 2.Sxf5#
- 2.Qf3#
- 1...Be6
- 2.Re4#
- 2.Qf3#
- 1...Bd7
- 2.Re4#
- 2.Qf3#
- 1...Bc8
- 2.Re4#
- 2.Qf3#
- 1...e4
- 2.Bxd4#
- 1...Bxe2!
- 1...Qxc5
- 1.Kxc2?
- Keys
- 1.Sf4!
- threat
- 2.Sd5#
- 1...Kxf4
- 2.Qd2#
- 1...Qxc5
- 2.Re4#
- 2.Qg1#
- 1...Bxe2
- 2.Qxe2#
- 1...exf4
- 2.Bxd4#
- 1...Bf3
- 2.Qg1#
- 1...Be6
- 2.Qg3#
- 2.Qg1#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(e);N_SPINQ(e),OGATE,XB(G)::R1(E)
- B(f);N_GUARD,P_SPINB(f),XP(C)::R(F),XP(c)
- B(f);N_GUARD::S(I)
- B(f);N_GUARD::S(I),XB(f)
- B(f);OGATE::R1(F)
- P(d);N_GUARD::R(E)
- P(h);N_GUARD::B(G),XQ(e)
- Tries
- Try
- K(A);P-FLIGHT,XP(a)
- Vars
- B(f);CHECK,N_GUARD::S(I),XB(f)
- B(f);N_GUARD,P_SPINB(f),XP(C)::R(F),XP(c)
- B(f);N_GUARD::S(I)
- B(f);OGATE::R1(F)
- P(d);N_GUARD::R(E)
- P(h);N_GUARD::B(G),XQ(e)
- Refutation
- Q(e);CHECK,N_SPINQ(e),XB(G)
- Try
- S(J);
- Threat
- S(J)
- Vars
- K(b);P_SPINB(f),S_FLIGHT::QAB(B)
- Q(e);N_SPINQ(e),OGATE,XB(G)::R1(E)
- B(f);OGATE::R1(F)
- Refutation
- B(f);P_SPINB(f),XP(C)
- Try
- R(E);XQ(e)
- Threat
- DUALS(10)
- Vars
- B(f);N_GUARD,P_SPINB(f),XP(C)::R(F),XP(c)
- Refutation
- P(h);P_SPINP(h),XR(E)
- Try
- R(E);XP(g)
- Vars
- B(f);N_GUARD,P_SPINB(f),XP(C)::R(F),XP(c)
- P(d);N_GUARD::R(E)
- B(f);OGATE::R1(F)
- P(h);SBLOCK::S(I)
- Refutation
- Q(e);N_SPINQ(e),XB(G)
- Try
- R(F);CHECK,XP(c)
- Vars
- B(f);N_GUARD,P_SPINB(f)::R1(F),XB(f)
- Refutation
- B(f);XR(F)
- Try
- R(F);XB(f)
- Threat
- DUALS(3)
- Refutation
- P(i);XR(F)
- Try
- Q(B);CHECK
- Refutation
- K(b);N_SPINQ(e),P-FLIGHT,XP(C)
- Try
- Q(B);
- Vars
- Q(e);N_SPINQ(e),OGATE,XB(G)::R1(E)
- P(d);N_GUARD::R(E)
- P(h);N_GUARD::B(G),XQ(e)
- Refutation
- B(f);XP(C)
- Try
- Actual
- S(J);
- Threat
- S(J)
- Vars
- K(b);P_SPINB(f),S_FLIGHT,XS(J)::QAB(B)
- B(f);OGATE,P_SPINB(f),XP(C)::QAR1(B),XB(f)
- P(h);N_GUARD,SBLOCK,XS(J)::B(G),XQ(e)
- B(f);::QAB(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).