MESON Chess Problem Database
Problem Display
PID: 173743 (2b3Qn/p4rNB/6q1/K3B3/R1P1k1NR/2P2p2/2P2P2/8 w - - 0 1)
Boros, Sandor
Magyar Sakkvilag, 1927
#2
12 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Qd5#
- 2.c5#
- 1...Rf5
- 2.Qd5#
- 2.c5#
- 1...Rf6
- 2.Qd5#
- 2.c5#
- 1...Rb7
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 2.c5#
- 1...Re7
- 2.Qd5#
- 2.c5#
- 1...Rf8
- 2.Qd5#
- 2.c5#
- 1...Rf4
- Tries
- 1.Bh2?
- threat
- 2.Sf6#
- 1...Qf5+
- 2.Se5#
- 1...Rf5+
- 2.c5#
- 1...Rxg7
- 2.Qd5#
- 1...Rf4
- 2.Qd5#
- 2.c5#
- 1...Rf6
- 2.Sxf6#
- 2.Qd5#
- 2.c5#
- 1...Bxg4!
- threat
- 1.Bg3?
- threat
- 2.Sf6#
- 1...Qf5+
- 2.Se5#
- 1...Rf5+
- 2.c5#
- 1...Rxg7
- 2.Qd5#
- 1...Rf4
- 2.Qd5#
- 2.c5#
- 1...Rf6
- 2.Sxf6#
- 2.Qd5#
- 2.c5#
- 1...Bxg4!
- threat
- 1.Bd6?
- threat
- 2.Sf6#
- 1...Qf5+
- 2.Se5#
- 1...Rf5+
- 2.c5#
- 1...Rxg7
- 2.Qd5#
- 1...Rf6
- 2.Sxf6#
- 2.Qd5#
- 2.c5#
- 1...Bxg4!
- threat
- 1.Bb8?
- threat
- 2.Sf6#
- 1...Qf5+
- 2.Se5#
- 1...Rf5+
- 2.c5#
- 1...Rxg7
- 2.Qd5#
- 1...Rc7
- 2.c5#
- 1...Rf6
- 2.Sxf6#
- 2.Qd5#
- 2.c5#
- 1...Bxg4!
- threat
- 1.Qxf7?
- threat
- 2.Qd5#
- 2.Qf4#
- 2.c5#
- 1...Bxg4
- 2.Qd5#
- 2.Qf4#
- 1...Qf5
- 2.Qd5#
- 2.c5#
- 1...Bf5
- 2.Qd5#
- 2.c5#
- 1...Ba6
- 2.Qd5#
- 2.Qf4#
- 1...Be6
- 2.Qf4#
- 1...Bb7
- 2.Qf4#
- 2.Qxb7#
- 2.c5#
- 1...Bd7
- 2.Qd5#
- 2.Qf4#
- 1...Sxf7!
- threat
- 1.Bh2?
- Keys
- 1.Bc7!
- threat
- 2.Sf6#
- 1...Qf5+
- 2.Se5#
- 1...Rf5+
- 2.c5#
- 1...Rxc7
- 2.c5#
- 1...Rxg7
- 2.Qd5#
- 1...Bxg4
- 2.Qa8#
- 1...Rf6
- 2.Sxf6#
- 2.Qd5#
- 2.c5#
- threat
- 1.Bc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(e);OGATE::QAB1(L)
- Tries
- Try
- B(I);
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(c);CHECK,S_CUTB(f),S_CUTR(e)::R(G)+S(F)
- R(e);CHECK,N_SPINQ(c)::R(D)+P(E)
- R(e);OGATE,XS(J)::QAB1(L)
- Refutation
- B(f);P_SPINB(f),XS(F)
- Try
- B(I);
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(c);CHECK,S_CUTB(f),S_CUTR(e)::R(G)+S(F)
- R(e);CHECK,N_SPINQ(c)::R(D)+P(E)
- R(e);OGATE,XS(J)::QAB1(L)
- Refutation
- B(f);P_SPINB(f),XS(F)
- Try
- B(I);
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(c);CHECK,S_CUTB(f),S_CUTR(e)::R(G)+S(F)
- R(e);CHECK,N_SPINQ(c)::R(D)+P(E)
- R(e);OGATE,XS(J)::QAB1(L)
- Refutation
- B(f);P_SPINB(f),XS(F)
- Try
- B(I);
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(c);CHECK,S_CUTB(f),S_CUTR(e)::R(G)+S(F)
- R(e);CHECK,N_SPINQ(c)::R(D)+P(E)
- R(e);OGATE,XS(J)::QAB1(L)
- R(e);::R(D)+P(E)
- Refutation
- B(f);P_SPINB(f),XS(F)
- Try
- Q(L);XR(e)
- Threat
- DUALS(3)
- Vars
- B(f);::QAR1(L)
- Refutation
- S(g);XQ(L)
- Try
- Actual
- B(I);
- Threat
- R(G)+S(F),DCHECK
- Vars
- Q(c);CHECK,S_CUTB(f),S_CUTR(e)::R(G)+S(F)
- R(e);CHECK,N_SPINQ(c)::R(D)+P(E)
- R(e);XB(I)::R(D)+P(E)
- R(e);OGATE,XS(J)::QAB1(L)
- B(f);OGATE,P_SPINB(f),XS(F)::QAB(L)
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).