MESON Chess Problem Database
Problem Display
PID: 187491 (2bN4/3p4/1p4K1/1N1kBB1R/1Pp3p1/r3p3/2Pq4/1n1Q4 w - - 0 1)
Witt, Andreas
Die Schwalbe, 2018
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Qxd4#
- 1...Qd4
- Tries
- 1.Ba1?
- threat
- 2.Bd3#
- 1...Qd4
- 2.Qxd4#
- 1...Qd3
- 2.Bxd3#
- 1...Rd3
- 2.Bxd3#
- 1...d6
- 2.Sc7#
- 1...e2!
- threat
- 1.Bb2?
- threat
- 2.Bd3#
- 1...Qd4
- 2.Qxd4#
- 1...Qd3
- 2.Bxd3#
- 1...Rd3
- 2.Bxd3#
- 1...d6
- 2.Sc7#
- 1...e2!
- threat
- 1.Bf4?
- threat
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qd4
- 2.Sc7#
- 2.Qxd4#
- 1...Rd3
- 2.Bxd3#
- 1...d6!
- threat
- 1.Bd6?
- threat
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qd4
- 2.Qxd4#
- 1...Rd3
- 2.Bxd3#
- 1...e2!
- threat
- 1.Bf6?
- threat
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qd4
- 2.Qxd4#
- 1...Rd3
- 2.Bxd3#
- 1...d6
- 2.Sc7#
- 1...e2!
- threat
- 1.Bg7?
- threat
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qd4
- 2.Qxd4#
- 1...Rd3
- 2.Bxd3#
- 1...d6
- 2.Sc7#
- 1...e2!
- threat
- 1.Bh8?
- threat
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qd4
- 2.Qxd4#
- 1...Rd3
- 2.Bxd3#
- 1...d6
- 2.Sc7#
- 1...e2!
- threat
- 1.Be6+?
- 1...Ke4
- 2.Qxg4#
- 1...dxe6!
- 1...Ke4
- 1.Qf3+?
- 1...Kxe5
- 2.Sf7#
- 2.Bd3#
- 2.Be4#
- 2.Bxg4#
- 2.Be6#
- 2.Bxd7#
- 2.Qe4#
- 1...gxf3!
- 1...Kxe5
- 1.Qh1+?
- 1...Kxe5
- 2.Qe4#
- 1...Qg2!
- 1...Kxe5
- 1.Ba1?
- Keys
- 1.Bc3!
- threat
- 2.Bd3#
- 1...Qd4
- 2.Qxd4#
- 1...e2
- 2.Qh1#
- 1...Qd3
- 2.Bxd3#
- 1...d6
- 2.Sc7#
- threat
- 1.Bc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Q(b);OGATE::QAR1(A),XQ(b)
- Tries
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);OGATE::QAR1(A),XQ(b)
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- P(i);SBLOCK::S(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);OGATE::QAR1(A),XQ(b)
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- P(i);SBLOCK::S(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- Refutation
- P(i);
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- Q(b);OGATE::QAR1(A),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- Q(b);OGATE::QAR1(A),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- P(i);SBLOCK::S(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- Q(b);OGATE::QAR1(A),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- P(i);SBLOCK::S(D)
- Refutation
- P(d);
- Try
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- Q(b);OGATE::QAR1(A),XQ(b)
- R(c);N_SPINQ(b)::R(G)+B(F),XR(c)
- P(i);SBLOCK::S(D)
- Refutation
- P(d);
- Try
- B(F);CHECK
- Vars
- K(g);N_SPINQ(b),S_FLIGHT::QAR2(A),XP(f)
- Refutation
- P(i);XB(F)
- Try
- Q(A);CHECK,N_PINQ(b)
- Refutation
- P(f);XQ(A)
- Try
- Q(A);CHECK,N_PINQ(b)
- Vars
- K(g);P-FLIGHT,XB(E)::QAR1(A)
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Actual
- B(E);
- Threat
- R(G)+B(F)
- Vars
- Q(b);OGATE::QAR1(A),XQ(b)
- P(d);::QAB(A)
- Q(b);P_PINB(F)::R(G)+B(F),XQ(b)
- P(i);SBLOCK::S(D)
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).