MESON Chess Problem Database
Problem Display
PID: 251861 (7q/1QB1NNb1/p5rp/K2R3r/1p2kp2/3R3B/3P2P1/1b6 w - - 0 1)
Zilahi, Zoltan
Die Schwalbe, 1930
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxh3
- 2.R5d4#
- 2.Rd6#
- 1...Rh4
- 2.Bf5#
- 2.R5d4#
- 2.Rd6#
- 1...Rxd5+
- 2.Qxd5#
- 1...Re5
- 2.Rd4#
- 2.Qxb4#
- 1...Rf5
- 2.Bxf5#
- 1...Rxg2
- 2.Sd6#
- 1...Rg3
- 2.Sd6#
- 1...Rg4
- 2.Sd6#
- 1...Rg5
- 2.Sd6#
- 1...Rd6
- 2.Sxd6#
- 1...Rf6
- 2.Rd4#
- 2.Qxb4#
- 1...Be5
- 2.R5d4#
- 2.Rd6#
- 1...Bf6
- 2.Sd6#
- 1...f3
- 2.Re3#
- 2.gxf3#
- 1...Rxh3
- Tries
- 1.Se5?
- threat
- 2.R3d4#
- 2.R5d4#
- 2.Qxb4#
- 1...Rxe5
- 2.Rd4#
- 2.Qxb4#
- 1...Bxe5
- 2.R5d4#
- 2.Rd6#
- 1...Qb8
- 2.R3d4#
- 2.R5d4#
- 1...Rb6
- 2.R3d4#
- 2.R5d4#
- 1...Rc6
- 2.R3d4#
- 2.R5d4#
- 1...Rd6
- 2.R3d4#
- 2.Qxb4#
- 1...Ba2
- 2.R3d4#
- 2.R5d4#
- 1...b3
- 2.R3d4#
- 2.R5d4#
- 2.Qb4#
- 1...Bxd3!
- threat
- 1.Bg4?
- threat
- 2.Bf3#
- 1...Rxd5+
- 2.Qxd5#
- 1...Rxg4
- 2.Sd6#
- 1...Rh3
- 2.Bf5#
- 2.R5d4#
- 2.Rd6#
- 1...f3
- 2.Bxf3#
- 2.Re3#
- 2.gxf3#
- 1...Bd4!
- threat
- 1.Be5?
- threat
- 2.R3d4#
- 2.R5d4#
- 2.Rd6#
- 2.Qxb4#
- 1...Rxe5
- 2.Rd4#
- 2.Qxb4#
- 1...Rxg2
- 2.Sd6#
- 2.R5d4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 2.Qxb4#
- 1...Bxd3
- 2.Rd4#
- 2.Rd6#
- 1...Bxe5
- 2.R5d4#
- 2.Rd6#
- 1...Qa8
- 2.R3d4#
- 2.R5d4#
- 2.Qxb4#
- 1...Qb8
- 2.R3d4#
- 2.R5d4#
- 1...Qc8
- 2.R3d4#
- 2.R5d4#
- 1...Qe8
- 2.R3d4#
- 2.R5d4#
- 2.Qxb4#
- 1...Rb6
- 2.R3d4#
- 2.R5d4#
- 1...Rc6
- 2.R3d4#
- 2.R5d4#
- 1...Rd6
- 2.Sxd6#
- 2.R3d4#
- 2.R5d4#
- 2.Rxd6#
- 2.Qxb4#
- 1...Ba2
- 2.R3d4#
- 2.R5d4#
- 1...b3
- 2.R3d4#
- 2.R5d4#
- 2.Rd6#
- 2.Qb4#
- 1...Qd8+!
- threat
- 1.Rg5+?
- 1...Rc6
- 2.Bf5#
- 1...Kxd3!
- 1...Rc6
- 1.Rxh5+?
- 1...Rc6
- 2.Bf5#
- 1...Kxd3!
- 1...Rc6
- 1.Se5?
- Keys
- 1.Rf3!
- threat
- 2.Rxf4#
- 1...Rxd5+
- 2.Qxd5#
- 1...Rh4
- 2.Bf5#
- 2.Rd6#
- 1...Re5
- 2.Qxb4#
- 1...Rf5
- 2.Bxf5#
- 1...Rg4
- 2.Sd6#
- 1...Rd6
- 2.Sxd6#
- 1...Rf6
- 2.Qxb4#
- 1...Bd4
- 2.Re5#
- 1...Be5
- 2.Rd6#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(e);CHECK,OGATE,P_SPINR(e),XR(F)::QAB1(G),XR(e)
- R(e);N_GUARD::B(D),XR(e)
- R(g);N_GUARD,XP(B)::S(J)
- R(g);N_GUARD::S(J)
- R(g);N_GUARD::S(J),XR(g)
- B(i);S_CUTR(g)::S(J)
- Tries
- Try
- S(J);N_SPINR(F)
- Threat
- DUALS(3)
- Refutation
- B(a);XR(C)
- Try
- B(D);
- Threat
- B(D)
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XR(F)::QAB1(G),XR(e)
- R(g);N_GUARD,XB(D)::S(J)
- Refutation
- B(i);
- Try
- B(H);N_SPINR(F)
- Threat
- DUALS(4)
- Refutation
- Q(j);CHECK
- Try
- R(F);CHECK
- Vars
- R(g);P_SPINR(g)::B(D)
- Refutation
- K(c);S_FLIGHT,XR(C)
- Try
- R(F);CHECK,N_SPINR(F),XR(e)
- Vars
- R(g);P_SPINR(g)::B(D)
- Refutation
- K(c);S_FLIGHT,XR(C)
- Try
- Actual
- R(C);
- Threat
- R1(C),XP(d)
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XR(F)::QAB1(G),XR(e)
- R(e);S_CUTB(i)::QAR(G),XP(b)
- R(e);N_GUARD::B(D),XR(e)
- R(g);N_GUARD::S(J)
- R(g);N_GUARD::S(J),XR(g)
- R(g);S_CUTB(i)::QAR(G),XP(b)
- B(i);SBLOCK::QAB(G)+R(F),DCHECK
- B(i);N_PINR(F)::QAB(G)+R(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).