MESON Chess Problem Database
Problem Display
PID: 22052 (N7/1p2p3/pRrkPpp1/P1p2PPb/p3PKp1/B3N1Q1/1R6/2b5 w - - 0 1)
Anderson, Gerald Frank
Adventures of my Chessmen, 1924
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Rxb6
- 2.Rxb6#
- 1...Bxb2
- 2.Sc4#
- 1...Bd2
- 2.Rxd2#
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...gxf5
- 2.Kxf5#
- 1...Rxb6
- Tries
- 1.Rb1?
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Rxb6
- 2.Rxb6#
- 1...Bxa3
- 2.Sc4#
- 2.Rd1#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...Bd2!
- 1...Bxe3+
- 1.Ra2?
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Bxa3
- 2.Sc4#
- 2.Rd2#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...Bd2
- 2.Rxd2#
- 1...Rxb6!
- 1...Bxe3+
- 1.Rc2?
- threat
- 2.Bxc5#
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Bxa3
- 2.Sc4#
- 2.Rd2#
- 1...gxf5
- 2.Kxf5#
- 1...Rxb6!
- threat
- 1.Re2?
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Bxa3
- 2.Sc4#
- 2.Rd2#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...Bd2
- 2.Rxd2#
- 1...Rxb6!
- 1...Bxe3+
- 1.Rf2?
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Bxa3
- 2.Sc4#
- 2.Rd2#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...Bd2
- 2.Rxd2#
- 1...Rxb6!
- 1...Bxe3+
- 1.Rg2?
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Bxa3
- 2.Sc4#
- 2.Rd2#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...Bd2
- 2.Rxd2#
- 1...Rxb6!
- 1...Bxe3+
- 1.Rh2?
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Bxa3
- 2.Sc4#
- 2.Rd2#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...Bd2
- 2.Rxd2#
- 1...Rxb6!
- 1...Bxe3+
- 1.R2b3?
- threat
- 2.Rd3#
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Rxb6
- 2.Rxb6#
- 1...gxf5
- 2.Kxf5#
- 1...Bb2
- 2.Sc4#
- 1...axb3!
- threat
- 1.R2b5?
- threat
- 2.Bxc5#
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Rxb6
- 2.Rxb6#
- 1...Bxa3
- 2.Sc4#
- 1...gxf5
- 2.Kxf5#
- 1...axb5!
- threat
- 1.Rxc6+?
- 1...Kxc6
- 2.Rb6#
- 1...bxc6!
- 1...Kxc6
- 1.gxf6?
- threat
- 2.Kg5#
- 2.e5#
- 1...Bxe3+
- 2.Kxe3#
- 1...g5+
- 2.Kxg5#
- 1...Rxb6
- 2.Rxb6#
- 1...Bxb2
- 2.Sc4#
- 1...gxf5
- 2.Kxf5#
- 1...exf6!
- threat
- 1.Rb1?
- Keys
- 1.R2b4!
- threat
- 2.Rd4#
- 1...Bxe3+
- 2.Kxe3#
- 1...fxg5+
- 2.Kxg5#
- 1...Rxb6
- 2.Rxb6#
- 1...Bxa3
- 2.Sc4#
- 1...cxb4
- 2.Bxb4#
- 1...gxf5
- 2.Kxf5#
- 1...c4
- 2.Rb2#
- 1...Bb2
- 2.Sc4#
- threat
- 1.R2b4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(g);N_SPINR(g),OGATE,XR(J)::R(A),XR(g)
- B(a);N_PINS(C),XR(A)::S(C)
- B(a);N_GUARD::R(A),XB(a)
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- Tries
- Try
- R(A);
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- R(g);N_SPINR(g),OGATE,XR(J)::R(A),XR(g)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- Refutation
- B(a);
- Try
- R(A);
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- B(a);N_GUARD::R(A),XB(a)
- Refutation
- R(g);N_SPINR(g),XR(J)
- Try
- R(A);
- Threat
- B(B),XP(d)
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- Refutation
- R(g);N_SPINR(g),XR(J)
- Try
- R(A);
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- B(a);N_GUARD::R(A),XB(a)
- Refutation
- R(g);N_SPINR(g),XR(J)
- Try
- R(A);
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- B(a);N_GUARD::R(A),XB(a)
- Refutation
- R(g);N_SPINR(g),XR(J)
- Try
- R(A);
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- B(a);N_GUARD::R(A),XB(a)
- Refutation
- R(g);N_SPINR(g),XR(J)
- Try
- R(A);
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- B(a);N_GUARD::R(A),XB(a)
- Refutation
- R(g);N_SPINR(g),XR(J)
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- R(g);N_SPINR(g),OGATE,XR(J)::R(A),XR(g)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- B(a);N_PINS(C)::S(C)
- Refutation
- P(b);XR(A)
- Try
- R(A);
- Threat
- B(B),XP(d)
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- R(g);N_SPINR(g),OGATE,XR(J)::R(A),XR(g)
- B(a);N_PINS(C),N_SPINP(d),XB(B)::S(C)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- Refutation
- P(f);XR(A)
- Try
- R(J);CHECK,XR(g)
- Vars
- K(h);N_SPINP(d),P-FLIGHT,XR(J)::R1(A)
- Refutation
- P(k);XR(J)
- Try
- P(I);XP(i)
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(j);CHECK::QAB(D)+K(F),XP(j)
- R(g);N_SPINR(g),OGATE,XR(J)::R(A),XR(g)
- B(a);N_PINS(C),XR(A)::S(C)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- Refutation
- P(l);XP(I)
- Try
- Actual
- R(A);N_PINP(d)
- Threat
- R(A)
- Vars
- B(a);CHECK,XS(C)::QAB(D)+K(F),XB(a)
- P(i);CHECK,XP(I)::QAB(D)+K(F),XP(i)
- R(g);N_SPINR(g),OGATE,XR(J)::R(A),XR(g)
- B(a);N_PINS(C),XB(B)::S(C)
- P(d);OGATE,P_SPINP(d),XR(A)::B(B),XP(d)
- P(j);XP(H)::QAB(D)+K(F),XP(j)
- P(d);OGATEB::B(B)+R(A)
- B(a);N_PINS(C)::S(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).