MESON Chess Problem Database
Problem Display
PID: 251766 (7k/4N3/1pp3K1/r1P2pp1/2ppp1p1/2Nb2P1/Q2b4/BRr5 w - - 0 1)
Witt, Andreas
Die Schwalbe, 2021
#2
8 + 13
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Rxh1#
- 1...Rc2
- 2.Rh1#
- 1...Rxc3
- 2.Rh1#
- 1...Rb5
- 2.Qa8#
- 1...Rxc5
- 2.Qa8#
- 1...Ra8
- 2.Qxa8#
- 1...Be1
- 2.Qh2#
- 1...Bxc3
- 2.Qh2#
- 1...Be3
- 2.Qh2#
- 1...Bf4
- 2.Qh2#
- 1...bxc5
- 2.Rb8#
- 1...Rh1
- Tries
- 1.Sd1?
- threat
- 2.Bxd4#
- 1...Rxc5
- 2.Qa8#
- 1...bxc5
- 2.Rb8#
- 1...Bc3
- 2.Qh2#
- 1...Be3
- 2.Qh2#
- 1...Bf4
- 2.Qh2#
- 1...c3
- 2.Qg8#
- 1...Rc3!
- threat
- 1.Sa4?
- threat
- 2.Bxd4#
- 1...bxc5
- 2.Rb8#
- 1...Rc3
- 2.Rh1#
- 1...Bc3
- 2.Qh2#
- 1...Be3
- 2.Qh2#
- 1...Bf4
- 2.Qh2#
- 1...c3
- 2.Qg8#
- 1...Rxc5!
- threat
- 1.Sb5?
- threat
- 2.Bxd4#
- 1...Rc3
- 2.Rh1#
- 1...Bc3
- 2.Qh2#
- 1...Be3
- 2.Qh2#
- 1...Bf4
- 2.Qh2#
- 1...c3
- 2.Qg8#
- 1...bxc5!
- threat
- 1.Scd5?
- threat
- 2.Bxd4#
- 1...bxc5
- 2.Rb8#
- 1...Rc3
- 2.Rh1#
- 1...Bc3
- 2.Qh2#
- 1...Be3
- 2.Qh2#
- 1...Bf4
- 2.Qh2#
- 1...c3!
- threat
- 1.Rxc1?
- threat
- 2.Rh1#
- 1...Bxc1
- 2.Qh2#
- 1...Be1
- 2.Qh2#
- 1...Bf1!
- threat
- 1.Rxb6?
- threat
- 2.Rb8#
- 1...Rb5
- 2.Qa8#
- 1...Ra8
- 2.Qxa8#
- 1...Bf4
- 2.Qh2#
- 1...Rb1!
- threat
- 1.Qxc4?
- threat
- 2.Qg8#
- 2.Qxd4#
- 1...Rxc5
- 2.Qg8#
- 1...Bxc3
- 2.Qg8#
- 1...dxc3
- 2.Qg8#
- 2.Qd4#
- 1...bxc5
- 2.Rb8#
- 2.Qg8#
- 1...Ra4
- 2.Qg8#
- 1...Ra8
- 2.Qxd4#
- 1...Be3
- 2.Qg8#
- 1...Bf4
- 2.Qg8#
- 1...Bxc4!
- threat
- 1.Qxd2?
- threat
- 2.Qh2#
- 1...Rh1
- 2.Rxh1#
- 1...Rc2
- 2.Rh1#
- 1...Bf1
- 2.Qxd4#
- 1...Be2
- 2.Qxd4#
- 1...Ra2!
- threat
- 1.Qxa5?
- threat
- 2.Qa8#
- 1...bxa5
- 2.Rb8#
- 1...Bf4!
- threat
- 1.Sd1?
- Keys
- 1.Sxe4!
- threat
- 2.Bxd4#
- 1...Rxc5
- 2.Qa8#
- 1...bxc5
- 2.Rb8#
- 1...Rc3
- 2.Rh1#
- 1...Bc3
- 2.Qh2#
- 1...Be3
- 2.Qh2#
- 1...Bf4
- 2.Qh2#
- 1...c3
- 2.Qg8#
- threat
- 1.Sxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(a);OGATE::R(B),XR(a)
- R(a);OGATE::R(B)
- R(a);OGATE,XS(D)::R(B)
- R(h);OGATE::QAB1(C)
- R(h);OGATE,XP(F)::QAB1(C)
- R(h);OGATE::QAB1(C),XR(h)
- B(b);OGATE::QAR(C)
- B(b);OGATE,XS(D)::QAR(C)
- P(k);OGATE,XP(F)::R(B)
- Tries
- Try
- S(D);P_PINP(e)
- Threat
- B(A),XP(e)
- Vars
- R(h);OGATE,XP(F)::QAB1(C)
- P(k);OGATE,XP(F)::R(B)
- B(b);N_SPINP(e),OGATE::QAR(C)
- B(b);OGATE::QAR(C)
- P(d);N_SPINP(e),OGATE::QAR1(C)
- Refutation
- R(a);N_SPINP(e)
- Try
- S(D);P_PINP(e)
- Threat
- B(A),XP(e)
- Vars
- P(k);OGATE,XP(F)::R(B)
- R(a);N_SPINP(e),OGATE::R(B)
- B(b);N_SPINP(e),OGATE::QAR(C)
- B(b);OGATE::QAR(C)
- P(d);N_SPINP(e),OGATE::QAR1(C)
- Refutation
- R(h);XP(F)
- Try
- S(D);P_PINP(e)
- Threat
- B(A),XP(e)
- Vars
- R(a);N_SPINP(e),OGATE::R(B)
- B(b);N_SPINP(e),OGATE::QAR(C)
- B(b);OGATE::QAR(C)
- P(d);N_SPINP(e),OGATE::QAR1(C)
- Refutation
- P(k);XP(F)
- Try
- S(D);P_PINP(e)
- Threat
- B(A),XP(e)
- Vars
- P(k);OGATE,XP(F)::R(B)
- R(a);N_SPINP(e),OGATE::R(B)
- B(b);N_SPINP(e),OGATE::QAR(C)
- B(b);OGATE::QAR(C)
- Refutation
- P(d);N_SPINP(e)
- Try
- R(B);XR(a)
- Threat
- R(B)
- Vars
- B(b);OGATE,XR(B)::QAR(C)
- B(b);OGATE::QAR(C)
- Refutation
- B(c);
- Try
- R(B);XP(k)
- Threat
- R(B)
- Vars
- R(h);OGATE::QAB1(C)
- R(h);OGATE::QAB1(C),XR(h)
- B(b);OGATE::QAR(C)
- Refutation
- R(a);
- Try
- Q(C);XP(d)
- Threat
- DUALS(2)
- Vars
- R(h);XP(F)::QAR1(C)
- B(b);XS(D)::QAR1(C)
- R(h);::QAR1(C)
- R(h);SBLOCK::QAB(C),XP(e)
- B(b);::QAR1(C)
- Refutation
- B(c);XQ(C)
- Try
- Q(C);XB(b)
- Threat
- QAR(C)
- Vars
- R(a);OGATE::R(B),XR(a)
- R(a);OGATE::R(B)
- B(c);OGATE::QAB(C),XP(e)
- Refutation
- R(h);
- Try
- Q(C);XR(h)
- Threat
- QAB1(C)
- Vars
- P(k);OGATE,XQ(C)::R(B)
- Refutation
- B(b);
- Try
- Actual
- S(D);P_PINP(e),XP(f)
- Threat
- B(A),XP(e)
- Vars
- R(h);OGATE,XP(F)::QAB1(C)
- P(k);OGATE,XP(F)::R(B)
- R(a);N_SPINP(e),OGATE::R(B)
- B(b);N_SPINP(e),OGATE::QAR(C)
- B(b);OGATE::QAR(C)
- P(d);N_SPINP(e),OGATE::QAR1(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).