MESON Chess Problem Database

Problem Display
PID: 70818 (8/1p1N4/1Rp2p2/n7/2pk3p/1pNp2pP/1R4K1/1B2Q3 w - - 0 1)

Servais, Albert

L'Echo des Sports, 1944

8/1p1N4/1Rp2p2/n7/2pk3p/1pNp2pP/1R4K1/1B2Q3

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Qxd2#
    • 1...c5
      • 2.Rd6#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Kf1?
      • 1...d2
        • 2.Qxd2#
      • 1...c5
        • 2.Rd6#
      • 1...f5
        • 2.Qe5#
      • 1...g2+!
    • 1.Kg1?
      • 1...d2
        • 2.Qxd2#
      • 1...c5
        • 2.Rd6#
      • 1...f5
        • 2.Qe5#
      • 1...g2!
    • 1.Kh1?
      • 1...d2
        • 2.Qxd2#
      • 1...c5
        • 2.Rd6#
      • 1...f5
        • 2.Qe5#
      • 1...g2+!
    • 1.Kf3?
      • 1...d2
        • 2.Qxd2#
        • 2.Qe3#
      • 1...c5
        • 2.Rd6#
      • 1...f5
        • 2.Qe5#
      • 1...g2!
    • 1.Sb5+?
      • 1...cxb5
        • 2.Rd6#
      • 1...Kd5!
    • 1.Ba2?
      • 1...d2
        • 2.Qxd2#
      • 1...c5
        • 2.Rd6#
      • 1...f5
        • 2.Qe5#
      • 1...bxa2!
    • 1.Bc2?
      • 1...dxc2
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
      • 1...c5
        • 2.Rd6#
      • 1...f5
        • 2.Qe5#
      • 1...bxc2!
    • 1.Rc2?
      • threat
        • 2.Qg1#
        • 2.Qe4#
      • 1...dxc2
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
        • 2.Qe4#
      • 1...f5
        • 2.Qg1#
        • 2.Qe5#
      • 1...bxc2!
    • 1.Re2?
      • threat
        • 2.Re4#
      • 1...dxe2
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
      • 1...f5!
    • 1.Rf2?
      • threat
        • 2.Rf4#
      • 1...d2
        • 2.Qxd2#
      • 1...gxf2!
    • 1.Qd2?
      • 1...c5
        • 2.Rd6#
      • 1...f5!
    • 1.Qf2+?
      • 1...Kxc3
        • 2.Qxf6#
      • 1...gxf2!
    • 1.Qc1?
      • 1...d2
        • 2.Qxd2#
      • 1...c5
        • 2.Rd6#
      • 1...f5!
  • Keys
    • 1.Qe6!
      • 1...Kxc3
        • 2.Qxf6#
      • 1...f5
        • 2.Qe5#
      • 1...d2
        • 2.Se2#
      • 1...c5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAR2(B),XP(b)
    • P(h);OGATE::R(G)
    • P(i);N_GUARD::QAB1(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);OGATEB::QAR2(B),XP(b)
        • P(h);OGATE::R(G)
        • P(i);N_GUARD::QAB1(B)
      • Refutation
        • P(c);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);OGATEB::QAR2(B),XP(b)
        • P(h);OGATE::R(G)
        • P(i);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);OGATEB::QAR2(B),XP(b)
        • P(h);OGATE::R(G)
        • P(i);N_GUARD::QAB1(B)
      • Refutation
        • P(c);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(h);OGATE::R(G)
        • P(i);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • S(E);CHECK
      • Vars
        • P(h);OGATE,XS(E)::R(G)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • B(A);
      • Vars
        • P(b);OGATEB::QAR2(B),XP(b)
        • P(h);OGATE::R(G)
        • P(i);N_GUARD::QAB1(B)
      • Refutation
        • P(a);XB(A)
    • Try
      • B(A);
      • Vars
        • P(b);OGATEB,XB(A)::QAR2(B)
        • P(b);OGATEB::QAR2(B),XP(b)
        • P(h);OGATE::R(G)
        • P(i);N_GUARD::QAB1(B)
      • Refutation
        • P(a);XB(A)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB,XR(C)::QAR2(B)
      • Refutation
        • P(a);XR(C)
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • P(b);OGATEB,XR(C)::QAR2(B)
        • P(b);OGATEB::QAR2(B),XP(b)
      • Refutation
        • P(i);
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • P(b);OGATEB::QAR2(B),XP(b)
      • Refutation
        • P(c);XR(C)
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • P(h);OGATE::R(G)
      • Refutation
        • P(i);
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(E)::QAB(B),XP(i)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Vars
        • P(b);OGATEB::QAR2(B),XP(b)
        • P(h);OGATE::R(G)
      • Refutation
        • P(i);
  • Actual
    • Q(B);
    • Vars
      • K(e);S_FLIGHT,XS(E)::QAB(B),XP(i)
      • P(i);N_GUARD::QAB1(B)
      • P(b);N_GUARD::S(E)
      • P(h);N_GUARD::S(E)
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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).