MESON Chess Problem Database
Problem Display
PID: 92655 (2b1NBK1/2Pp2P1/1pB1kN1R/1P1Rbp2/2np4/4pr2/2Q5/6qr w - - 0 1)
van der Kraan, Petrus Adrianus
Tijdschrift vd KNSB, 1947
#2
11 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxg7+
- 2.Sxg7#
- 1...Bh2
- 2.Sg4#
- 1...Bg3
- 2.Sh5#
- 1...Bf4
- 2.Qxf5#
- 1...Bxf6
- 2.Rxf6#
- 1...Bxc7
- 2.Sxc7#
- 1...Ba6
- 2.Bxd7#
- 1...Bb7
- 2.Bxd7#
- 1...Qxg7+
- Tries
- 1.Se4+?
- 1...Qg6
- 2.Sg5#
- 1...Bf6
- 2.Rxf6#
- 1...Rxh6!
- 1...Qg6
- 1.Sg4+?
- 1...Bf6
- 2.Rxf6#
- 1...Rxh6!
- 1...Bf6
- 1.Sh5+?
- 1...Bf6
- 2.Rxf6#
- 1...Qg6!
- 1...Bf6
- 1.Sh7+?
- 1...Qg6
- 2.Sg5#
- 1...Bf6
- 2.Rxf6#
- 1...Rxh6!
- 1...Qg6
- 1.Rxe5+?
- 1...Sxe5
- 2.Bd5#
- 1...Kxe5!
- 1...Sxe5
- 1.Rd6+?
- 1...Sxd6
- 2.Bd5#
- 1...Bxd6!
- 1...Sxd6
- 1.Rxd7?
- threat
- 2.Bd5#
- 2.Re7#
- 2.Qxc4#
- 1...Qxg7+
- 2.Sxg7#
- 1...Bxf6
- 2.Re7#
- 1...Bxc7
- 2.Re7#
- 1...Bxd7
- 2.Bd5#
- 2.Bxd7#
- 2.Qxc4#
- 1...Bh2
- 2.Sg4#
- 2.Re7#
- 1...Bg3
- 2.Re7#
- 1...Bf4
- 2.Re7#
- 1...Qc1
- 2.Bd5#
- 2.Re7#
- 1...Qf1
- 2.Bd5#
- 2.Re7#
- 1...Bb7
- 2.Re7#
- 2.Qxc4#
- 1...Sb2
- 2.Bd5#
- 2.Re7#
- 1...Sd2
- 2.Bd5#
- 2.Re7#
- 1...Sa3
- 2.Bd5#
- 2.Re7#
- 1...Sa5
- 2.Bd5#
- 2.Re7#
- 1...Sd6
- 2.Bd5#
- 2.Re7#
- 1...f4
- 2.Bd5#
- 2.Re7#
- 1...Bd6!
- threat
- 1.Se4+?
- Keys
- 1.Rc5!
- threat
- 2.Bd5#
- 1...Qxg7+
- 2.Sxg7#
- 1...Bxf6
- 2.Rxf6#
- 1...Bxc7
- 2.Sxc7#
- 1...dxc6
- 2.Qxc4#
- 1...Bh2
- 2.Sg4#
- 1...Bg3
- 2.Sh5#
- 1...Bf4
- 2.Qxf5#
- 1...Bd6
- 2.Qxc4#
- 1...Bb7
- 2.Bxd7#
- 1...d5
- 2.Bxd5#
- threat
- 1.Rc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(a);CHECK,XP(H)::S(I),XQ(a)
- B(g);N_GUARD,S_CUTR(b)::R(F)+S(E)
- B(g);N_GUARD,N_PINP(H),S_CUTQ(a)::R(F)+S(E)
- B(g);S_CUTR(d)::QAB1(A),XP(h)
- B(g);OGATE,P_SPINB(g),XS(E)::R1(F),XB(g)
- B(g);XP(G)::S(I),XB(g)
- B(l);N_GUARD::B(D),XP(k)
- Tries
- Try
- S(E);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(E)
- B(g);N_GUARD,P_SPINB(g)::R1(F),XB(g)
- Refutation
- R(b);XR(F)
- Try
- S(E);CHECK,N_SPINP(H)
- Vars
- B(g);N_GUARD,P_SPINB(g)::R1(F),XB(g)
- Refutation
- R(b);XR(F)
- Try
- S(E);CHECK
- Vars
- B(g);N_GUARD,P_SPINB(g)::R1(F),XB(g)
- Refutation
- Q(a);P_SPINQ(a)
- Try
- S(E);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(E)
- B(g);N_GUARD,P_SPINB(g)::R1(F),XB(g)
- Refutation
- R(b);XR(F)
- Try
- R(C);CHECK,XB(g)
- Vars
- S(e);SBLOCK,XR(C)::B(D)
- Refutation
- K(j);P-FLIGHT,XR(C)
- Try
- R(C);CHECK
- Vars
- S(e);XR(C)::B(D)
- Refutation
- B(g);XR(C)
- Try
- R(C);XP(k)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,XP(H)::S(I),XQ(a)
- B(g);P_SPINB(g),XS(E)::R1(C)
- B(g);XP(G)::R1(C)
- B(g);N_PINP(H)::R1(C)
- B(g);::R1(C)
- Refutation
- B(g);
- Try
- Actual
- R(C);
- Threat
- B(D)
- Vars
- Q(a);CHECK,XP(H)::S(I),XQ(a)
- B(g);OGATE,P_SPINB(g),XS(E)::R1(F),XB(g)
- B(g);XP(G)::S(I),XB(g)
- P(k);N_GUARD,XB(D)::QAB(A),XS(e)
- B(g);N_GUARD,S_CUTR(b)::R(F)+S(E)
- B(g);N_GUARD,N_PINP(H),S_CUTQ(a)::R(F)+S(E)
- B(g);S_CUTR(d)::QAB1(A),XP(h)
- B(g);S_CUTP(k)::QAB(A),XS(e)
- B(l);N_GUARD::B(D),XP(k)
- P(k);::B(D),XP(k)
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).