MESON Chess Problem Database
Problem Display
PID: 222216 (2bN4/2n1K3/3P1R2/3k4/N2BpP2/b1pPQ3/7p/1rr1n2q w - - 0 1)
Wilson, Francis Vaux
US Problem Bulletin, 1964
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qxe4#
- 1...Qg1
- 2.Qxe4#
- 1...Ra1
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Rd1
- 2.Sxc3#
- 1...Bb2
- 2.Sb6#
- 1...Bb4
- 2.Sb6#
- 1...Bxd6+
- 2.Rxd6#
- 1...Bf5
- 2.Rxf5#
- 1...Ba6
- 2.Rf5#
- 1...Bb7
- 2.Rf5#
- 1...Sc2
- 2.Sxc3#
- 1...Sg2
- 2.Qxe4#
- 1...Sf3
- 2.Qxe4#
- 1...Sb5
- 2.Sb6#
- 1...Se6
- 2.Rf5#
- 1...c2
- 2.Sc3#
- 1...Qf1
- Tries
- 1.Bxc3?
- threat
- 2.Qd4#
- 1...Bxd6+
- 2.Rxd6#
- 1...Rxc3
- 2.Sxc3#
- 1...Qg1
- 2.Qxe4#
- 1...Rb4
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Sf3
- 2.Qxe4#
- 1...Sb5
- 2.Sb6#
- 1...Se6
- 2.Rf5#
- 1...Sc2!
- threat
- 1.Bc5?
- threat
- 2.Qd4#
- 1...Bxc5
- 2.Qxc5#
- 1...Qg1
- 2.Qxe4#
- 1...Sc2
- 2.Sxc3#
- 1...Sf3
- 2.Qxe4#
- 1...Sb5
- 2.Sb6#
- 1...Se6
- 2.Rf5#
- 1...Rb4!
- threat
- 1.Be5?
- threat
- 2.Qd4#
- 1...Bxd6+
- 2.Rxd6#
- 1...Qg1
- 2.Qxe4#
- 1...Rb4
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Sc2
- 2.Sxc3#
- 1...Sf3
- 2.Qxe4#
- 1...Sb5
- 2.Sb6#
- 1...Se6!
- threat
- 1.Bb6?
- threat
- 2.Qd4#
- 1...Bxd6+
- 2.Rxd6#
- 1...Rxb6
- 2.Sxb6#
- 1...Qg1
- 2.Qxe4#
- 1...Rb4
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Sc2
- 2.Sxc3#
- 1...Sf3
- 2.Qxe4#
- 1...Se6
- 2.Rf5#
- 1...Sb5!
- threat
- 1.Bxc3?
- Keys
- 1.Ba7!
- threat
- 2.Qd4#
- 1...Bxd6+
- 2.Rxd6#
- 1...Qg1
- 2.Qxe4#
- 1...Rb4
- 2.Qc5#
- 1...Rb6
- 2.Sxb6#
- 1...Bc5
- 2.Qxc5#
- 1...Sc2
- 2.Sxc3#
- 1...Sf3
- 2.Qxe4#
- 1...Sb5
- 2.Sb6#
- 1...Se6
- 2.Rf5#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(d);N_GUARD::QAB1(B),XP(h)
- R(a);N_GUARD::S(C)
- R(a);N_GUARD::S(C),XR(a)
- R(b);N_GUARD::S(C),XP(g)
- B(f);N_PINP(F),S_CUTR(a)::S(C)
- B(f);S_CUTR(a)::S(C)
- B(f);CHECK,OGATE,XP(F)::R1(G),XB(f)
- B(k);N_GUARD::R(G),XB(k)
- B(k);N_GUARD::R(G)
- S(c);S_CUTR(b)::S(C),XP(g)
- S(c);S_CUTQ(d)::QAB1(B),XP(h)
- S(j);S_CUTR(a)::S(C)
- S(j);S_CUTB(k)::R(G)
- P(g);S_CUTR(b)::S(C)
- Tries
- Try
- B(D);XP(g)
- Threat
- QAR1(B)
- Vars
- B(f);CHECK,OGATE,XP(F)::R1(G),XB(f)
- R(b);XB(D)::S(C),XR(b)
- Q(d);N_GUARD::QAB1(B),XP(h)
- R(a);N_PINP(F),S_CUTB(f)::QAR1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- S(c);S_CUTQ(d)::QAB1(B),XP(h)
- S(j);S_CUTR(a)::S(C)
- S(j);S_CUTB(k)::R(G)
- Refutation
- S(c);
- Try
- B(D);N_SPINP(F)
- Threat
- QAR1(B)
- Vars
- B(f);OGATE,P_PINP(F),XB(D)::QAR1(B),XB(f)
- Q(d);N_GUARD::QAB1(B),XP(h)
- S(c);S_CUTR(b)::S(C),XP(g)
- S(c);S_CUTQ(d)::QAB1(B),XP(h)
- S(j);S_CUTR(a)::S(C)
- S(j);S_CUTB(k)::R(G)
- Refutation
- R(a);
- Try
- B(D);
- Threat
- QAR1(B)
- Vars
- B(f);CHECK,OGATE,XP(F)::R1(G),XB(f)
- Q(d);N_GUARD::QAB1(B),XP(h)
- R(a);N_PINP(F),S_CUTB(f)::QAR1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- S(c);S_CUTR(b)::S(C),XP(g)
- S(c);S_CUTQ(d)::QAB1(B),XP(h)
- S(j);S_CUTR(a)::S(C)
- Refutation
- S(j);
- Try
- B(D);
- Threat
- QAR1(B)
- Vars
- B(f);CHECK,OGATE,XP(F)::R1(G),XB(f)
- R(a);XB(D)::S(C),XR(a)
- Q(d);N_GUARD::QAB1(B),XP(h)
- R(a);N_PINP(F),S_CUTB(f)::QAR1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- S(c);S_CUTR(b)::S(C),XP(g)
- S(c);S_CUTQ(d)::QAB1(B),XP(h)
- S(j);S_CUTB(k)::R(G)
- Refutation
- S(j);
- Try
- Actual
- B(D);
- Threat
- QAR1(B)
- Vars
- B(f);CHECK,OGATE,XP(F)::R1(G),XB(f)
- Q(d);N_GUARD::QAB1(B),XP(h)
- R(a);N_PINP(F),S_CUTB(f)::QAR1(B)
- R(a);N_GUARD::S(C),XR(a)
- B(f);N_GUARD::QAR1(B),XB(f)
- S(c);S_CUTR(b)::S(C),XP(g)
- S(c);S_CUTQ(d)::QAB1(B),XP(h)
- S(j);S_CUTR(a)::S(C)
- S(j);S_CUTB(k)::R(G)
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).