MESON Chess Problem Database
Problem Display
PID: 99998 (8/1p1QNp2/1p1npP1p/pRb4B/R2Pk3/2p1B3/2K5/5N2 w - - 0 1)
Jakab, Arpad
Comm., Magyar Sakkelet, 1955
#2
10 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Bxd4
- 2.Rxd4#
- 1...Sc4
- 2.Qxb7#
- 1...Sxb5
- 2.Qxb7#
- 1...Sf5
- 2.Qxb7#
- 1...Sc8
- 2.Qxb7#
- 1...Se8
- 2.Qxb7#
- 1...e5
- 2.Qg4#
- 1...Ba3
- Tries
- 1.Bc1?
- threat
- 2.Sg3#
- 1...Sf5
- 2.Qxb7#
- 1...Bb4!
- threat
- 1.Bxh6?
- threat
- 2.Sg3#
- 1...Sf5
- 2.Qxb7#
- 1...Bb4!
- threat
- 1.Bd1?
- 1...Bxd4
- 2.Rxd4#
- 1...Sxb5
- 2.Qxb7#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Sc4
- 2.Qxb7#
- 1...Sf5
- 2.Qxb7#
- 1...Sc8
- 2.Qxb7#
- 1...Se8
- 2.Qxb7#
- 1...e5
- 2.Qg4#
- 1...h5!
- 1...Bxd4
- 1.Be2?
- 1...Bxd4
- 2.Rxd4#
- 1...Sxb5
- 2.Qxb7#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Sc4
- 2.Qxb7#
- 1...Sf5
- 2.Qxb7#
- 1...Sc8
- 2.Qxb7#
- 1...Se8
- 2.Qxb7#
- 1...e5
- 2.Qg4#
- 1...h5!
- 1...Bxd4
- 1.Rc4?
- 1...Bxd4
- 2.Rxd4#
- 1...Sxc4
- 2.Qxb7#
- 1...Sxb5
- 2.Qxb7#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Sf5
- 2.Qxb7#
- 1...Sc8
- 2.Qxb7#
- 1...Se8
- 2.Qxb7#
- 1...e5
- 2.Qg4#
- 1...a4!
- 1...Bxd4
- 1.Rxc5?
- threat
- 2.Re5#
- 1...Sc4
- 2.Qxb7#
- 1...e5
- 2.Rxe5#
- 2.Qg4#
- 1...bxc5!
- threat
- 1.Qc8?
- 1...Bxd4
- 2.Rxd4#
- 1...Sxb5
- 2.Qxb7#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Sc4
- 2.Qxb7#
- 1...Sf5
- 2.Qxb7#
- 1...Se8
- 2.Qxb7#
- 1...e5
- 2.Qg4#
- 1...Sxc8!
- 1...Bxd4
- 1.Qxd6?
- threat
- 2.Qf4#
- 2.Qe5#
- 2.dxc5#
- 1...Bxd4
- 2.Rxd4#
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 2.Qxd4#
- 1...Ba3
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 1...Bb4
- 2.Re5#
- 2.Qf4#
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 2.Qd5#
- 2.dxc5#
- 1...Bxd6!
- threat
- 1.Qc7?
- 1...Bxd4
- 2.Rxd4#
- 1...Sxb5
- 2.Qf4#
- 2.Qe5#
- 2.Qxb7#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Re5#
- 1...Sc4
- 2.Qf4#
- 2.Qxb7#
- 1...Sf5
- 2.Qf4#
- 2.Qe5#
- 2.Qxb7#
- 1...Sc8
- 2.Qf4#
- 2.Qe5#
- 2.Qxb7#
- 2.dxc5#
- 1...Se8
- 2.Qf4#
- 2.Qe5#
- 2.Qxb7#
- 2.dxc5#
- 1...e5!
- 1...Bxd4
- 1.dxc5+?
- 1...Sc4
- 2.Qd4#
- 1...Ke5!
- 1...Sc4
- 1.Bc1?
- Keys
- 1.Sd5!
- 1...Kxd5
- 2.Bf3#
- 1...Kf5
- 2.Sg3#
- 1...Bxd4
- 2.Sxc3#
- 1...Sxb5
- 2.Sg3#
- 1...exd5
- 2.Qg4#
- 1...Ba3
- 2.Sg3#
- 2.Sxc3#
- 1...Bb4
- 2.Sg3#
- 1...Sc4
- 2.Sg3#
- 1...Sf5
- 2.Sxc3#
- 1...Sc8
- 2.Sg3#
- 1...Se8
- 2.Sg3#
- 1...e5
- 2.Sxc3#
- 1...Kxd5
- 1.Sd5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- B(d);OGATE::R1(F)
- B(d);OGATE,P_SPINB(d),XP(E)::R1(D),XB(d)
- S(f);N_GUARD::QAB(I),XP(i)
- S(f);N_GUARD,XR(F)::QAB(I),XP(i)
- P(g);OGATE::QAR2(I)
- Tries
- Try
- B(C);
- Threat
- S(A)
- Vars
- S(f);N_GUARD::QAB(I),XP(i)
- Refutation
- B(d);
- Try
- B(C);XP(h)
- Threat
- S(A)
- Vars
- S(f);N_GUARD::QAB(I),XP(i)
- Refutation
- B(d);
- Try
- B(G);
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::R1(D),XB(d)
- S(f);N_GUARD,XR(F)::QAB(I),XP(i)
- B(d);OGATE::R1(F)
- S(f);N_GUARD::QAB(I),XP(i)
- P(g);OGATE::QAR2(I)
- Refutation
- P(h);
- Try
- B(G);
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::R1(D),XB(d)
- S(f);N_GUARD,XR(F)::QAB(I),XP(i)
- B(d);OGATE::R1(F)
- S(f);N_GUARD::QAB(I),XP(i)
- P(g);OGATE::QAR2(I)
- Refutation
- P(h);
- Try
- R(D);
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::R1(D),XB(d)
- S(f);N_GUARD,XR(D)::QAB(I),XP(i)
- S(f);N_GUARD,XR(F)::QAB(I),XP(i)
- B(d);OGATE::R1(F)
- S(f);N_GUARD::QAB(I),XP(i)
- P(g);OGATE::QAR2(I)
- Refutation
- P(c);
- Try
- R(F);XB(d)
- Threat
- R1(F)
- Vars
- S(f);N_GUARD::QAB(I),XP(i)
- Refutation
- P(e);XR(F)
- Try
- Q(I);
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::R1(D),XB(d)
- S(f);N_GUARD,XR(F)::QAB(I),XP(i)
- B(d);OGATE::R1(F)
- S(f);N_GUARD::QAB(I),XP(i)
- P(g);OGATE::QAR2(I)
- Refutation
- S(f);XQ(I)
- Try
- Q(I);XS(f)
- Threat
- DUALS(3)
- Refutation
- B(d);XQ(I)
- Try
- Q(I);
- Vars
- B(d);OGATE,P_SPINB(d),XP(E)::R1(D),XB(d)
- B(d);OGATE::R1(F)
- Refutation
- P(g);
- Try
- P(E);CHECK,XB(d)
- Vars
- S(f);OGATE,P_SPINS(f)::QAR1(I)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- S(J);
- Vars
- K(b);P_SPINB(d),P_SPINS(f),S_FLIGHT,XS(J)::B(G)
- K(b);P_SPINP(g),S_FLIGHT::S(A)
- B(d);P_SPINB(d),XP(E)::S(J),XP(a)
- S(f);XR(F)::S(A)
- P(g);OGATE,SBLOCK,XS(J)::QAR2(I)
- B(d);::S(A)
- S(f);::S(A)
- S(f);SBLOCK::S(J),XP(a)
- P(g);::S(J),XP(a)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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