MESON Chess Problem Database
Problem Display
PID: 90553 (Q7/p1PPp3/N1K1R3/pPB1Pp1r/Rqn1kp2/4pN2/2r1P3/nB6 w - - 0 1)
Vollenweider, Odette (aka Baumgartner, Gabriel)
Die Schwalbe, 1964
#2
13 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Rxc4#
- 1...Qa3
- 2.Rxc4#
- 1...Qxc5+
- 2.Kxc5#
- 2.Sxc5#
- 1...Qxb5+
- 2.Kxb5#
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sb3
- 2.Bxc2#
- 1...Sxe5+
- 2.Rxe5#
- 1...Sd6
- 2.exd6#
- 1...Qe1
- Tries
- 1.Bxb4?
- threat
- 2.Kc5#
- 2.Sc5#
- 1...Sb2+
- 2.Sc5#
- 1...Sd2+
- 2.Sc5#
- 1...Sa3+
- 2.Sc5#
- 1...Sb6+
- 2.Sc5#
- 1...Sd6+
- 2.Sc5#
- 1...Rh8
- 2.Sc5#
- 1...Sb3
- 2.Bxc2#
- 1...Sxe5+!
- threat
- 1.Rxb4?
- threat
- 2.Rxc4#
- 1...Sb3
- 2.Bxc2#
- 1...axb4!
- threat
- 1.d8Q?
- threat
- 2.Kd7#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Qxc5+
- 2.Kxc5#
- 2.Sxc5#
- 1...Qxb5+
- 2.Kxb5#
- 1...Sxe5+
- 2.Rxe5#
- 1...Qa3
- 2.Kd7#
- 2.Rxc4#
- 2.Qd4#
- 2.Qd5#
- 1...Qc3
- 2.Kd7#
- 2.Qd5#
- 1...Qb2
- 2.Kd7#
- 2.Qd3#
- 2.Qd5#
- 1...Qb3
- 2.Kd7#
- 2.Qd4#
- 2.Qd5#
- 1...Sb3
- 2.Kd7#
- 2.Bxc2#
- 2.Qd3#
- 2.Qd5#
- 1...Sb2
- 2.Kd7#
- 2.Qd5#
- 1...Sd2
- 2.Kd7#
- 2.Qd3#
- 2.Qd5#
- 1...Sa3
- 2.Kd7#
- 2.Qd3#
- 2.Qd5#
- 1...Sb6
- 2.Qd3#
- 1...Sd6
- 2.exd6#
- 1...Qd2!
- threat
- 1.Bxb4?
- Keys
- 1.Bxa7!
- 1...Qc5+
- 2.Kxc5#
- 2.Sxc5#
- 1...Qd6+
- 2.exd6#
- 1...Qxb5+
- 2.Kxb5#
- 1...Sb2+
- 2.Kb6#
- 2.Sc5#
- 1...Sd2+
- 2.Kb6#
- 2.Sc5#
- 1...Sa3+
- 2.Kb6#
- 2.Sc5#
- 1...Sxe5+
- 2.Kb6#
- 1...Sb6+
- 2.Kxb6#
- 2.Sc5#
- 1...Sd6+
- 2.Sc5#
- 1...Qxb1
- 2.Kc5#
- 2.Sc5#
- 1...Qxa4
- 2.Kc5#
- 2.Sc5#
- 1...Qe1
- 2.Kc5#
- 2.Sc5#
- 2.Rxc4#
- 1...Qd2
- 2.Sc5#
- 1...Qa3
- 2.Rxc4#
- 1...Qc3
- 2.Kc5#
- 2.Sc5#
- 1...Qb2
- 2.Kc5#
- 2.Sc5#
- 1...Qb3
- 2.Kc5#
- 2.Sc5#
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sb3
- 2.Bxc2#
- 1...Qc5+
- 1.Bxa7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(d);OGATE,P_SPINS(e)::R(D),XS(e)
- Q(d);CHECK,P_SPINS(e),XP(E)::QAB(M)+K(I),XQ(d)
- R(j);N_GUARD::S(C)
- R(j);N_GUARD::S(C),XR(j)
- R(j);N_GUARD,P_PINR(J)::S(C)
- S(a);N_GUARD::B(A),XR(b)
- S(e);CHECK,OGATE,P_PINB(F),P_SPINQ(d),P_SPINS(e),XP(G)::R1(J),XS(e)
- S(e);OGATE,P_PINB(F),P_SPINQ(d)::R(J)+P(G),XS(e)
- Tries
- Try
- B(F);XQ(d)
- Threat
- DUALS(2)
- Vars
- S(e);CHECK::S(H)
- R(j);::S(H)
- S(a);N_GUARD::B(A),XR(b)
- Refutation
- S(e);CHECK,P_SPINS(e),XP(G)
- Try
- R(D);P_PINS(e),XQ(d)
- Threat
- R(D),XS(e)
- Vars
- S(a);N_GUARD::B(A),XR(b)
- Refutation
- P(h);N_SPINS(e),XR(D)
- Try
- P(L);
- Threat
- DUALS(4)
- Vars
- Q(d);CHECK,P_SPINS(e),XP(E)::QAB(M)+K(I),XQ(d)
- S(e);CHECK,OGATE,P_PINB(F),P_SPINQ(d),P_SPINS(e),XP(G)::R1(J),XS(e)
- S(e);P_PINB(F),P_SPINQ(d)::QAB1(L)
- S(e);OGATE,P_PINB(F),P_SPINQ(d)::R(J)+P(G),XS(e)
- Refutation
- Q(d);P_SPINS(e)
- Try
- Actual
- B(F);XP(k)
- Vars
- Q(d);CHECK,OGATE,P_SPINS(e)::R(J)+P(G),XQ(d)
- Q(d);CHECK,P_SPINS(e),XP(E)::QAB(M)+K(I),XQ(d)
- S(e);CHECK,P_SPINQ(d),P_SPINS(e),XP(G)::QAB(M)+K(I)
- S(e);CHECK,P_SPINQ(d)::S(H)
- Q(d);N_GUARD,P_SPINS(e)::S(H)
- Q(d);OGATE,P_SPINS(e)::R(D),XS(e)
- R(j);N_GUARD::S(C)
- R(j);N_GUARD::S(C),XR(j)
- R(j);N_GUARD,P_PINR(J)::S(C)
- S(a);N_GUARD::B(A),XR(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).