MESON Chess Problem Database
Problem Display
PID: 90029 (B1nR4/2N5/1b2P2p/r3k1p1/4N1P1/2r2RK1/3Q1p1B/q4b2 w - - 0 1)
Prins, Hendrik
Die Schwalbe, 1994
#2
10 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rf5#
- 1...Rc2
- 2.Rf5#
- 1...Re3
- 2.Kxf2#
- 1...Rxf3+
- 2.Kxf3#
- 1...Rc4
- 2.Rf5#
- 1...Rcc5
- 2.Kxf2#
- 2.Rf5#
- 1...Ra2
- 2.Qd5#
- 1...Ra3
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 1...Rac5
- 2.Kxf2#
- 2.Qd4#
- 1...Rd5
- 2.Qxd5#
- 1...Ra6
- 2.Qd5#
- 1...Ra7
- 2.Qd5#
- 1...Rxa8
- 2.Qd5#
- 1...Be2
- 2.Kg2#
- 2.Kh3#
- 1...Bg2
- 2.Kxg2#
- 1...Bd3
- 2.Kg2#
- 2.Kh3#
- 2.Rf5#
- 1...Bh3
- 2.Kxh3#
- 1...Bc4
- 2.Kg2#
- 2.Kh3#
- 1...Bb5
- 2.Kg2#
- 2.Kh3#
- 2.Qd5#
- 1...Ba6
- 2.Kg2#
- 2.Kh3#
- 1...Be3
- 2.Rf5#
- 1...Bd4
- 2.Qxd4#
- 1...Bc5
- 2.Qd5#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...h5
- 2.Qxg5#
- 1...Rc1
- Tries
- 1.Sc5?
- threat
- 2.Kxf2#
- 2.Sd7#
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Rcxc5
- 2.Kxf2#
- 2.Rf5#
- 2.Qe3#
- 1...Raxc5
- 2.Kxf2#
- 2.Qd4#
- 1...Rxa8
- 2.Kxf2#
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Bxc5
- 2.Qd5#
- 1...Bxc7
- 2.Kxf2#
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Qd1
- 2.Kxf2#
- 2.Sd7#
- 2.Rd5#
- 1...Qe1
- 2.Sd7#
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Qa2
- 2.Kxf2#
- 2.Sd7#
- 2.Qxc3#
- 2.Qd4#
- 1...Qa4
- 2.Rd5#
- 2.Qd5#
- 1...Rc1
- 2.Kxf2#
- 2.Sd7#
- 2.Rf5#
- 2.Rd5#
- 2.Qe3#
- 2.Qd5#
- 1...Rc2
- 2.Kxf2#
- 2.Sd7#
- 2.Rf5#
- 2.Rd5#
- 2.Qe3#
- 2.Qd5#
- 1...Rca3
- 2.Kxf2#
- 2.Sd7#
- 2.Rd5#
- 2.Qd5#
- 1...Rb3
- 2.Kxf2#
- 2.Sd7#
- 2.Rd5#
- 2.Qd5#
- 1...Rd3
- 2.Kxf2#
- 1...Re3
- 2.Kxf2#
- 2.Sd7#
- 2.Rd5#
- 2.Qxe3#
- 2.Qd5#
- 1...Rc4
- 2.Sd7#
- 2.Rf5#
- 2.Rd5#
- 2.Qd5#
- 1...Ra4
- 2.Sd7#
- 2.Rd5#
- 2.Qd5#
- 1...Bd3
- 2.Kxf2#
- 2.Kg2#
- 2.Kh3#
- 2.Rd5#
- 1...Bc4
- 2.Kxf2#
- 2.Kg2#
- 2.Kh3#
- 2.Sd7#
- 2.Qd4#
- 1...Bb5
- 2.Kxf2#
- 2.Kg2#
- 2.Kh3#
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Sd6
- 2.Kxf2#
- 2.Sd7#
- 2.Qd5#
- 2.Qxd6#
- 1...Se7
- 2.Kxf2#
- 2.Sd7#
- 2.Qd4#
- 2.Qd6#
- 1...Rxf3+!
- threat
- 1.Sxg5?
- threat
- 2.Kh4#
- 2.Sf7#
- 2.Qf4#
- 1...Rxc7
- 2.Kh4#
- 2.Rf5#
- 2.Qf4#
- 1...Rxa8
- 2.Kh4#
- 2.Rd5#
- 2.Qf4#
- 2.Qd5#
- 1...Bxc7
- 2.Kxf2#
- 2.Kh4#
- 2.Qf4#
- 2.Qd4#
- 1...hxg5
- 2.Qxg5#
- 1...Qc1
- 2.Kh4#
- 2.Sf7#
- 1...Qa4
- 2.Sf7#
- 1...Re3
- 2.Kxf2#
- 2.Kh4#
- 2.Sf7#
- 1...Rc4
- 2.Sf7#
- 2.Rf5#
- 1...Rc6
- 2.Kh4#
- 2.Rf5#
- 2.Qf4#
- 1...Ra4
- 2.Sf7#
- 2.Rd5#
- 2.Qd5#
- 1...Rd5
- 2.Kh4#
- 2.Rxd5#
- 2.Qf4#
- 2.Qxd5#
- 1...Be3
- 2.Sf7#
- 2.Rf5#
- 1...Sd6
- 2.Kh4#
- 2.Qf4#
- 2.Qxd6#
- 1...Rxf3+!
- threat
- 1.Rd5+?
- 1...Rxd5
- 2.Qxd5#
- 1...Kxe4!
- 1...Rxd5
- 1.Qxc3+?
- 1...Bd4
- 2.Rf5#
- 1...Qxc3!
- 1...Bd4
- 1.Qd7?
- threat
- 2.Qg7#
- 1...Rxf3+
- 2.Kxf3#
- 1...Rxc7
- 2.Rf5#
- 1...Rxa8
- 2.Qd5#
- 1...Bxc7
- 2.Kxf2#
- 1...Rd5
- 2.Qxd5#
- 1...Se7
- 2.Qd6#
- 1...Rc6!
- threat
- 1.Sc5?
- Keys
- 1.Qe3!
- threat
- 2.Kxf2#
- 2.Rf5#
- 1...Rxe3
- 2.Kxf2#
- 1...Rxc7
- 2.Sc5#
- 1...Bxe3
- 2.Rf5#
- 1...Bxc7
- 2.Sxc3#
- 1...Qb2
- 2.Rf5#
- 1...Qe1
- 2.Rf5#
- 1...Qa2
- 2.Rf5#
- 1...Rc2
- 2.Sc5#
- 2.Rf5#
- 1...Ra2
- 2.Rf5#
- 2.Rd5#
- 1...Sd6
- 2.Kxf2#
- 1...Se7
- 2.Kxf2#
- threat
- 1.Qe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 17
- Sets
- R(d);N_PINR(C)::R1(C)
- R(d);::B(B)+K(D),XP(c)
- R(d);CHECK,XR(C)::B(B)+K(D),XR(d)
- R(e);N_GUARD::QAR1(A)
- R(e);N_GUARD::QAR1(A),XR(e)
- R(e);N_GUARD,XB(I)::QAR1(A)
- B(b);::B(B)+K(D),XB(b)
- B(h);N_PINR(C)::R1(C)
- B(h);N_GUARD::QAB1(A),XB(h)
- B(h);S_CUTR(e)::QAR1(A)
- S(j);N_GUARD::QAB1(A),XS(j)
- S(j);N_GUARD::QAB1(A)
- P(i);N_GUARD::QAR2(A),XP(g)
- Tries
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- B(h);XS(E)::QAR1(A)
- R(d);::B(B)+K(D),XP(c)
- Refutation
- R(d);CHECK,XR(C)
- Try
- S(E);XP(g)
- Threat
- DUALS(3)
- Vars
- P(i);OGATE,XS(E)::QAR2(A),XP(i)
- Q(a);::S(E)
- Refutation
- R(d);CHECK,XR(C)
- Try
- R(J);CHECK
- Vars
- R(e);OGATE,XR(J)::QAR1(A),XR(e)
- Refutation
- K(f);P-FLIGHT,XS(E)
- Try
- Q(A);CHECK,N_SPINR(C),XR(d)
- Vars
- B(h);P_SPINB(h)::R1(C)
- Refutation
- Q(a);P_PINR(C),XQ(A)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- R(d);CHECK,XR(C)::B(B)+K(D),XR(d)
- R(d);N_PINR(C),XS(H)::R1(C)
- R(e);N_GUARD,XB(I)::QAR1(A)
- B(h);XS(H)::B(B)+K(D),XP(c)
- R(e);N_GUARD::QAR1(A),XR(e)
- S(j);N_GUARD::QAB1(A)
- Refutation
- R(d);N_PINR(C)
- Try
- Actual
- Q(A);N_SPINR(C)
- Threat
- DUALS(2)
- Vars
- R(d);P_PINR(C),XQ(A)::B(B)+K(D),XP(c)
- R(d);N_GUARD,XS(H)::QAR(A)+S(E)
- B(h);XQ(A)::R1(C)
- B(h);N_GUARD,XS(H)::QAR(A)+S(E),XR(d)
- Q(a);::R1(C)
- S(j);::B(B)+K(D),XP(c)
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).