MESON Chess Problem Database
Problem Display
PID: 47797 (K7/P1p5/2R2N2/rp2PR2/2Pk4/5r2/1Pp2P2/Q1N2BBb w - - 0 1)
Renaud, Georges
Die Schwalbe, 1929
#2
13 + 7
| 4872 | Themes-64 | 1957 |
SOLUTION
- SOUND
- Sets
- 1...Rxf2
- 2.Bxf2#
- 1...Rfa3
- 2.bxa3#
- 1...Rb3
- 2.Sxb3#
- 1...Rc3
- 2.bxc3#
- 1...Rd3
- 2.Se2#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.Sb3#
- 2.f3#
- 1...Rxf5
- 2.f4#
- 1...Rxa7+
- 2.Qxa7#
- 1...bxc4
- 2.Rxc4#
- 1...Rxf2
- Tries
- 1.b3+?
- 1...Rc3
- 2.f3#
- 2.f4#
- 1...Rxa1!
- 1...Rc3
- 1.b4+?
- 1...Rc3
- 2.Sb3#
- 2.f3#
- 2.f4#
- 1...Rxa1!
- 1...Rc3
- 1.e6?
- threat
- 2.Rd5#
- 1...Rxa7+
- 2.Qxa7#
- 1...Rxf2
- 2.Bxf2#
- 1...Rxf5
- 2.f4#
- 1...bxc4
- 2.Rxc4#
- 1...Rfa3
- 2.bxa3#
- 1...Rb3
- 2.Sxb3#
- 1...Rc3
- 2.bxc3#
- 1...Rd3
- 2.Se2#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.Sb3#
- 2.f3#
- 1...b4!
- threat
- 1.b3+?
- Keys
- 1.cxb5!
- threat
- 2.Rc4#
- 1...Rxa7+
- 2.Qxa7#
- 1...Rxf2
- 2.Bxf2#
- 1...Rxf5
- 2.f4#
- 1...Rfa3
- 2.bxa3#
- 1...Rb3
- 2.Sxb3#
- 1...Rc3
- 2.bxc3#
- 1...Rd3
- 2.Se2#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rh3
- 2.f3#
- 1...Rf4
- 2.Sb3#
- 2.f3#
- 1...Ra4
- 2.Qxa4#
- threat
- 1.cxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(c);OGATE,P_PINR(J),P_SPINR(c),XP(F)::B(D),XR(c)
- R(c);OGATE,P_PINR(J)::QAB(A)+P(E),XR(c)
- R(c);N_GUARD,P_PINR(J)::S(B),XR(c)
- R(c);OGATE,P_PINR(J)::P(E),XR(c)
- R(c);P_PINR(J),SBLOCK::S(B)
- R(c);OGATE,P_PINR(J)::P(F),XR(c)
- R(c);OGATE,P_PINR(J)::B(D)+P(F),XR(c)
- R(c);OGATE,P_PINR(J)::B(D)+P(F)
- R(c);OGATE,P_PINR(J),XR(I)::B(D)+P(F)
- R(e);CHECK,OGATE,XP(L)::QAB(A),XR(e)
- P(f);OGATE,XP(G)::R1(J),XP(f)
- Tries
- Try
- P(E);CHECK
- Refutation
- R(e);XQ(A)
- Try
- P(E);CHECK
- Refutation
- R(e);XQ(A)
- Try
- P(H);
- Threat
- R1(I)
- Vars
- R(e);CHECK,OGATE,XP(L)::QAB(A),XR(e)
- R(c);OGATE,P_PINR(J),P_SPINR(c),XP(F)::B(D),XR(c)
- R(c);OGATE,P_PINR(J),XR(I)::B(D)+P(F)
- P(f);OGATE,XP(G)::R1(J),XP(f)
- R(c);OGATE,P_PINR(J)::QAB(A)+P(E),XR(c)
- R(c);N_GUARD,P_PINR(J)::S(B),XR(c)
- R(c);OGATE,P_PINR(J)::P(E),XR(c)
- R(c);P_PINR(J),SBLOCK::S(B)
- R(c);OGATE,P_PINR(J)::P(F),XR(c)
- R(c);OGATE,P_PINR(J)::B(D)+P(F),XR(c)
- R(c);OGATE,P_PINR(J)::B(D)+P(F)
- Refutation
- P(f);
- Try
- Actual
- P(G);XP(f)
- Threat
- R1(J)
- Vars
- R(e);CHECK,OGATE,XP(L)::QAB(A),XR(e)
- R(c);OGATE,P_PINR(J),P_SPINR(c),XP(F)::B(D),XR(c)
- R(c);OGATE,P_PINR(J),XR(I)::B(D)+P(F)
- R(c);OGATE,P_PINR(J)::QAB(A)+P(E),XR(c)
- R(c);N_GUARD,P_PINR(J)::S(B),XR(c)
- R(c);OGATE,P_PINR(J)::P(E),XR(c)
- R(c);P_PINR(J),SBLOCK::S(B)
- R(c);OGATE,P_PINR(J)::P(F),XR(c)
- R(c);OGATE,P_PINR(J)::B(D)+P(F),XR(c)
- R(c);OGATE,P_PINR(J)::B(D)+P(F)
- R(e);N_GUARD::QAR(A),XR(e)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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