MESON Chess Problem Database
Problem Display
PID: 16791 (B2R4/B1QqNP1K/1r5p/2nb3P/n2kp3/1P6/4PP2/2R5 w - - 0 1)
Hartong, Jan
De Probleemvriend, 1943
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Rc4#
- 2.Rxd5#
- 1...Qg4
- 2.Rc4#
- 2.Rxd5#
- 1...Qb5
- 2.Sf5#
- 2.Rxd5#
- 1...Qf5+
- 2.Sxf5#
- 1...Qc6
- 2.Sf5#
- 2.Rc4#
- 1...Qe6
- 2.Rc4#
- 1...Qc8
- 2.Rc4#
- 2.Rxd5#
- 1...Qe8
- 2.Sf5#
- 2.Rc4#
- 2.Rxd5#
- 1...Qxc7
- 2.Rxd5#
- 1...Qxe7
- 2.Rc4#
- 2.Rxd5#
- 1...Qxd8
- 2.Sf5#
- 1...Re6
- 2.Sf5#
- 1...Bxb3
- 2.Sf5#
- 1...Bc4
- 2.Sf5#
- 2.Rxc4#
- 1...Bc6
- 2.Rc4#
- 1...Bb7
- 2.Rc4#
- 1...Bxf7
- 2.Sf5#
- 1...Bxa8
- 2.Rc4#
- 1...Sd3
- 2.e3#
- 1...Sa6
- 2.Rd1#
- 1...Se6
- 2.Sf5#
- 2.Rd1#
- 1...Sb7
- 2.Rd1#
- 1...Qh3
- Tries
- 1.Rd1+?
- 1...Sd3
- 2.e3#
- 1...Kc3!
- 1...Sd3
- 1.Rxd7?
- threat
- 2.Sf5#
- 2.Rc4#
- 2.Rxd5#
- 1...Rxb3
- 2.Sf5#
- 2.Sc6#
- 2.Rxd5#
- 1...Sxd7
- 2.Sf5#
- 2.Rd1#
- 1...e3
- 2.Rc4#
- 1...Rb4
- 2.Sf5#
- 2.Sc6#
- 2.Rxd5#
- 1...Rf6
- 2.Rc4#
- 2.Rxd5#
- 1...Sb2
- 2.Sf5#
- 2.Rxd5#
- 1...Sc3
- 2.Sf5#
- 1...Rd6!
- threat
- 1.Rd1+?
- Keys
- 1.Qg3!
- 1...Qf5+
- 2.Sxf5#
- 1...Qxa7
- 2.Sf5#
- 2.Rc4#
- 2.Rxd5#
- 1...Qxe7
- 2.Rc4#
- 2.Rxd5#
- 1...Qxd8
- 2.Sf5#
- 1...Rxb3
- 2.Qg7#
- 1...Bxb3
- 2.Sf5#
- 1...Bxf7
- 2.Sf5#
- 1...Bxa8
- 2.Rc4#
- 1...Sxb3
- 2.Qg7#
- 1...e3
- 2.Qxe3#
- 1...Qh3
- 2.Rc4#
- 2.Rxd5#
- 1...Qg4
- 2.Rc4#
- 2.Rxd5#
- 1...Qb5
- 2.Sf5#
- 2.Rxd5#
- 1...Qc6
- 2.Sf5#
- 2.Rc4#
- 1...Qe6
- 2.Rc4#
- 1...Qc8
- 2.Rc4#
- 2.Rxd5#
- 1...Qe8
- 2.Sf5#
- 2.Rc4#
- 2.Rxd5#
- 1...Qd6
- 2.Sf5#
- 1...Qb7
- 2.Sf5#
- 2.Rc4#
- 1...Qc7
- 2.Sf5#
- 2.Rc4#
- 2.Rxd5#
- 1...Rb4
- 2.Rd1#
- 2.Qg7#
- 1...Rb5
- 2.Rd1#
- 2.Qg7#
- 1...Ra6
- 2.Rd1#
- 1...Rc6
- 2.Rd1#
- 1...Rd6
- 2.Rd1#
- 1...Re6
- 2.Sf5#
- 2.Rd1#
- 1...Rf6
- 2.Rd1#
- 1...Rg6
- 2.Rd1#
- 1...Rb7
- 2.Rd1#
- 2.Qg7#
- 1...Rb8
- 2.Rd1#
- 2.Qg7#
- 1...Bc4
- 2.Sf5#
- 2.Rxc4#
- 1...Bc6
- 2.Rc4#
- 2.Qg7#
- 1...Be6
- 2.Qg7#
- 1...Bb7
- 2.Rc4#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd3
- 2.e3#
- 1...Sa6
- 2.Qg7#
- 1...Se6
- 2.Sf5#
- 1...Sb7
- 2.Qg7#
- 1...Qf5+
- 1.Qg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 13
- REMOVED MATES = 3
- Sets
- Q(h);CHECK,N_GUARD,P_SPINB(e)::S(H),XQ(h)
- Q(h);P_SPINB(e)::R1(A)
- Q(h);OGATE,P_SPINB(e),XQ(G)::R1(L),XB(e)
- Q(h);N_GUARD,XR(L)::S(H)
- R(f);P_SPINS(d),S_CUTQ(h)::S(H)
- B(e);P_SPINQ(h),XP(D)::S(H)
- B(e);N_GUARD,P_SPINQ(h)::R1(A)
- B(e);P_SPINQ(h),XP(I)::S(H)
- B(e);N_GUARD,P_SPINQ(h),XB(K)::R1(A)
- S(d);P_SPINR(f),SBLOCK::P(B)
- S(d);N_GUARD,P_SPINR(f)::R(A)
- Tries
- Try
- R(A);CHECK
- Vars
- S(d);P_SPINR(f),P_SPINS(d)::P(B)
- Refutation
- K(b);P_SPINS(d),S_FLIGHT
- Try
- R(L);P_PINB(e),XQ(h)
- Threat
- DUALS(3)
- Vars
- P(c);::R1(A)
- S(a);::S(H)
- Refutation
- R(f);N_SPINB(e),P_SPINS(d)
- Try
- Actual
- Q(G);
- Vars
- Q(h);CHECK,N_GUARD,P_SPINB(e)::S(H),XQ(h)
- Q(h);N_GUARD,XR(L)::S(H)
- R(f);N_GUARD,P_SPINS(d),XP(D)::QAB(G)
- B(e);P_SPINQ(h),XP(D)::S(H)
- B(e);P_SPINQ(h),XP(I)::S(H)
- B(e);N_GUARD,P_SPINQ(h),XB(K)::R1(A)
- S(d);P_SPINR(f),XP(D)::QAB(G)
- P(c);::QAB1(G),XP(c)
- Q(h);P_SPINB(e)::R1(A)
- Q(h);N_GUARD::S(H)
- R(f);P_SPINS(d)::R(A)
- B(e);P_SPINQ(h),S_CUTR(f)::QAB(G)
- B(e);N_GUARD,P_SPINQ(h)::R1(A)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(d);P_SPINR(f),SBLOCK::P(B)
- S(d);P_SPINR(f)::QAB(G)
- S(d);P_SPINR(f),S_CUTQ(h)::S(H)
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).