MESON Chess Problem Database
Problem Display
PID: 72924 (RK2k2r/1ppNP1R1/2p1Bp1P/6Pn/Q4b2/B2n4/1r3q2/1b6 w k - 0 1)
Bohm, Ferenc
4th Prize, The Puzzler, 1933-1934
#2
10 + 12
| 57 | Tijdschrift vd KNSB | 1936 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Ka7#
- 1...Qg3
- 2.Ka7#
- 1...Qh4
- 2.Ka7#
- 1...Qa7+
- 2.Kxa7#
- 1...Qf1
- 2.Ka7#
- 1...Qc2
- 2.Ka7#
- 1...Qd2
- 2.Ka7#
- 1...Qe2
- 2.Ka7#
- 1...Qg2
- 2.Ka7#
- 1...Qh2
- 2.Ka7#
- 1...Qf3
- 2.Ka7#
- 1...Ra2
- 2.Kxb7#
- 1...Rc2
- 2.Kxb7#
- 1...Rd2
- 2.Kxb7#
- 1...Re2
- 2.Kxb7#
- 1...Rb6
- 2.Ka7#
- 1...Rxh6
- 2.Rg8#
- 1...Rh7
- 2.Rg8#
- 1...Rf8
- 2.exf8Q#
- 2.exf8R#
- 1...Rg8
- 2.Rxg8#
- 1...Bc1
- 2.Kxc7#
- 1...Bd2
- 2.Kxc7#
- 1...Be3
- 2.Kxc7#
- 1...Bxg5
- 2.Kxc7#
- 1...Sb4
- 2.Kxb7#
- 1...Sc5
- 2.Ka7#
- 1...Se5
- 2.Kxc7#
- 1...Sg3
- 2.Sxf6#
- 1...Sxg7
- 2.Sxf6#
- 1...c5
- 2.Ka7#
- 2.Sxf6#
- 1...b5
- 2.Kb7#
- 1...b6
- 2.Ka7#
- 2.Kb7#
- 1...Qe1
- Tries
- 1.Se5?
- threat
- 2.Kxc7#
- 2.Bd7#
- 2.Bf7#
- 1...Qa7+
- 2.Kxa7#
- 1...Sxe5
- 2.Kxc7#
- 1...fxe5
- 2.Kxc7#
- 1...Qd4
- 2.Bf7#
- 1...Qc5
- 2.Kxc7#
- 2.Bd7#
- 1...Qb6
- 2.Bd7#
- 2.Bf7#
- 1...Rb4
- 2.Kxc7#
- 2.Bd7#
- 1...Rf8
- 2.Kxc7#
- 2.Bd7#
- 2.exf8Q#
- 2.exf8R#
- 1...Ba2
- 2.Kxc7#
- 2.Bd7#
- 1...Sb4
- 2.Kxb7#
- 2.Kxc7#
- 2.Bd7#
- 1...Sc5
- 2.Ka7#
- 2.Kxc7#
- 1...Bxe5!
- threat
- 1.Sf8?
- threat
- 2.Bd7#
- 2.Bf7#
- 1...Qa7+
- 2.Kxa7#
- 1...Rxf8
- 2.exf8Q#
- 2.exf8R#
- 1...Qd4
- 2.Bf7#
- 1...Qc5
- 2.Bd7#
- 1...Rb4
- 2.Bd7#
- 1...Ba2
- 2.Bd7#
- 1...Bd6
- 2.Bd7#
- 1...Sb4
- 2.Kxb7#
- 2.Bd7#
- 1...Sc5
- 2.Ka7#
- 1...Se5
- 2.Kxc7#
- 1...Sxg7!
- threat
- 1.Qxc6?
- threat
- 2.Sxf6#
- 2.Bf7#
- 1...Qa7+
- 2.Kxa7#
- 1...Sxg7
- 2.Sxf6#
- 1...fxg5
- 2.Sf6#
- 2.Bf7#
- 1...Qc5
- 2.Sxf6#
- 1...Rb4
- 2.Sxf6#
- 1...Rf8
- 2.Sxf6#
- 2.exf8Q#
- 2.exf8R#
- 1...Ba2
- 2.Sxf6#
- 1...Bd6
- 2.Sxf6#
- 1...Sb4
- 2.Kxb7#
- 2.Sxf6#
- 1...Sc5
- 2.Ka7#
- 2.Sxf6#
- 1...Se5
- 2.Kxc7#
- 2.Sxf6#
- 1...f5
- 2.Sf6#
- 2.Bf7#
- 1...bxc6+!
- threat
- 1.Qd4?
- threat
- 2.Ka7#
- 2.Bf7#
- 1...Sxg7
- 2.Ka7#
- 2.Sxf6#
- 1...Rb4
- 2.Ka7#
- 1...Rf8
- 2.Ka7#
- 2.exf8Q#
- 2.exf8R#
- 1...Ba2
- 2.Ka7#
- 1...Bd6
- 2.Ka7#
- 1...Sb4
- 2.Ka7#
- 2.Kxb7#
- 1...Sc5
- 2.Ka7#
- 1...Se5
- 2.Ka7#
- 2.Kxc7#
- 1...c5
- 2.Ka7#
- 1...Qxd4!
- threat
- 1.Qxf4?
- threat
- 2.Kxc7#
- 1...Qa7+
- 2.Kxa7#
- 1...Qxf4
- 2.Ka7#
- 1...Qb6!
- threat
- 1.Se5?
- Keys
- 1.Qd1!
- threat
- 2.Qxh5#
- 1...Qa7+
- 2.Kxa7#
- 1...Rxh6
- 2.Rg8#
- 1...Sxg7
- 2.Sxf6#
- 1...Qh4
- 2.Ka7#
- 1...Qe2
- 2.Ka7#
- 1...Qh2
- 2.Ka7#
- 1...Qf3
- 2.Ka7#
- 1...Re2
- 2.Kxb7#
- 1...Rf8
- 2.exf8Q#
- 2.exf8R#
- 1...Sc1
- 2.Bf7#
- 1...Se1
- 2.Bf7#
- 1...Sb4
- 2.Kxb7#
- 1...Sc5
- 2.Ka7#
- 1...Se5
- 2.Kxc7#
- 1...Sg3
- 2.Sxf6#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 17
- Sets
- Q(c);::R(I)+K(J)
- Q(c);CHECK::R(I)+K(J),XQ(c)
- R(b);::R(I)+K(J),XP(i)
- R(b);::R(I)+K(J)
- R(l);N_GUARD,XP(E)::R(H)
- R(l);N_GUARD::R(H)
- R(l);OGATE::PXR(l)=Q
- R(l);N_GUARD::R(H),XR(l)
- B(e);::R(I)+K(J),XP(j)
- B(e);XP(C)::R(I)+K(J),XP(j)
- S(d);::R(I)+K(J),XP(i)
- S(d);::R(I)+K(J)
- S(d);::R(I)+K(J),XP(j)
- S(f);N_GUARD::S(F),XP(h)
- S(f);N_GUARD,XR(H)::S(F),XP(h)
- P(i);::R(I)+K(J)
- Tries
- Try
- S(F);P_PINP(g)
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK::R(I)+K(J),XQ(c)
- S(d);XS(F)::R(I)+K(J),XP(j)
- P(h);XS(F)::R(I)+K(J),XP(j)
- Q(c);::B(D)
- Refutation
- B(e);XS(F)
- Try
- S(F);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK::R(I)+K(J),XQ(c)
- R(l);OGATE,XS(F)::PXR(l)=Q
- Q(c);::B(D)
- R(b);::B(D)
- B(a);::B(D)
- B(e);::B(D)
- S(d);::R(I)+K(J)
- S(d);::R(I)+K(J),XP(j)
- Refutation
- S(f);XR(H)
- Try
- Q(B);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK::R(I)+K(J),XQ(c)
- S(f);XR(H)::QAB(B)+S(F),DCHECK,XP(h)
- Q(c);::QAB(B)+S(F),DCHECK,XP(h)
- R(b);::QAB(B)+S(F),DCHECK,XP(h)
- B(a);::QAB(B)+S(F),DCHECK,XP(h)
- B(e);::QAB(B)+S(F),DCHECK,XP(h)
- Refutation
- P(i);CHECK,XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(b);::R(I)+K(J)
- B(a);::R(I)+K(J)
- B(e);::R(I)+K(J)
- S(d);::R(I)+K(J)
- P(g);::R(I)+K(J)
- Refutation
- Q(c);XQ(B)
- Try
- Q(B);XB(e)
- Threat
- R(I)+K(J),XP(j)
- Vars
- Q(c);CHECK::R(I)+K(J),XQ(c)
- Q(c);XQ(B)::R(I)+K(J)
- Refutation
- Q(c);
- Try
- Actual
- Q(B);
- Threat
- QAB(B),XS(f)
- Vars
- Q(c);CHECK::R(I)+K(J),XQ(c)
- R(l);N_GUARD,XP(E)::R(H)
- S(f);N_GUARD,XR(H)::S(F),XP(h)
- Q(c);::R(I)+K(J)
- R(b);::R(I)+K(J),XP(i)
- R(l);OGATE::PXR(l)=Q
- S(d);::B(D)
- S(d);::R(I)+K(J),XP(i)
- S(d);::R(I)+K(J)
- S(d);::R(I)+K(J),XP(j)
- S(f);N_GUARD::S(F),XP(h)
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).