MESON Chess Problem Database
Problem Display
PID: 237025 (4n1B1/3R2p1/p1pP1k2/rb3NpP/r2p2K1/3pP1B1/1Q2N1p1/8 w - - 0 1)
Pituk, Alexander
Szachy, 1962
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxd4#
- 1...Ra2
- 2.Qxd4#
- 1...Ra3
- 2.Qxd4#
- 1...Sxd6
- 2.Rxd6#
- 1...Ra1
- Tries
- 1.Sc3?
- threat
- 2.Se4#
- 1...Sxd6
- 2.Rxd6#
- 1...dxc3+!
- threat
- 1.Sfxd4?
- threat
- 2.Rf7#
- 1...Rxd4+
- 2.Qxd4#
- 1...Bc4
- 2.Sb5#
- 1...Sxd6!
- threat
- 1.Bd5?
- threat
- 2.Rf7#
- 1...Sxd6
- 2.Rxd6#
- 1...cxd5!
- threat
- 1.Re7?
- threat
- 2.Be5#
- 2.Re6#
- 1...g1Q
- 2.Re6#
- 1...g1R
- 2.Re6#
- 1...Sc7
- 2.Be5#
- 1...Bc4!
- threat
- 1.Sc3?
- Keys
- 1.Sexd4!
- threat
- 2.Rf7#
- 1...Rxd4+
- 2.Qxd4#
- 1...Sxd6
- 2.Rxd6#
- 1...Bc4
- 2.Sb5#
- threat
- 1.Sexd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD::QAB(A),XP(d)
- S(l);OGATE,XP(H)::R(I),XS(l)
- Tries
- Try
- S(B);N_PINP(d)
- Threat
- S(B)
- Vars
- S(l);OGATE,XP(H)::R(I),XS(l)
- Refutation
- P(d);CHECK,P_SPINP(d),XS(B)
- Try
- S(F);P_SPINS(F),XP(d)
- Threat
- R1(I)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(F)::QAB(A),XR(c)
- B(f);N_PINS(F)::QAB(A)+S(F)
- Refutation
- S(l);XP(H)
- Try
- B(J);
- Threat
- R1(I)
- Vars
- S(l);OGATE,XP(H)::R(I),XS(l)
- Refutation
- P(i);XB(J)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- P(a);P_PINB(D)::R1(I)
- S(l);::B(D)
- Refutation
- B(f);
- Try
- Actual
- S(B);P_SPINS(B),XP(d)
- Threat
- R1(I)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(B)::QAB(A),XR(c)
- S(l);OGATE,XP(H)::R(I),XS(l)
- B(f);N_PINS(B)::QAB(A)+S(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).