MESON Chess Problem Database

Problem Display
PID: 162323 (B7/1R4B1/p1PpN3/P4p2/4kP2/1Pp1rp1P/2P1nK2/2QNR3 w - - 0 1)

Handloser, Ralf Chris

The Problemist, 2016

B7/1R4B1/p1PpN3/P4p2/4kP2/1Pp1rp1P/2P1nK2/2QNR3

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc1
      • 2.Sxc3#
    • 1...Sg1
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sxc3#
    • 1...Sxf4
      • 2.Sxc3#
    • 1...d5
      • 2.Qxe3#
  • Tries
    • 1.Sg5+?
      • 1...Kxf4
        • 2.Qxe3#
      • 1...Kd5!
    • 1.Sc7?
      • threat
        • 2.Qxe3#
      • 1...Kxf4
        • 2.Qxe3#
      • 1...Sxc1
        • 2.Rb4#
      • 1...Rd3!
    • 1.Rb4+?
      • 1...Sd4
        • 2.Sxc3#
        • 2.Rxd4#
      • 1...Kd5!
    • 1.Rb5?
      • threat
        • 2.Qxe3#
      • 1...Sxc1
        • 2.Sxc3#
        • 2.Rxe3#
      • 1...Rd3
        • 2.Sg5#
      • 1...axb5!
    • 1.Qd2?
      • 1...Sxf4
        • 2.Sxc3#
        • 2.Sg5#
        • 2.Rxe3#
        • 2.Rb4#
        • 2.Qd4#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Sd4
        • 2.Sxc3#
        • 2.Qxd4#
      • 1...Sc1
        • 2.Sxc3#
        • 2.Rxe3#
        • 2.Rb4#
        • 2.Qd4#
      • 1...Sg1
        • 2.Sxc3#
        • 2.Rxe3#
        • 2.Rb4#
        • 2.Qd3#
        • 2.Qd4#
      • 1...Sg3
        • 2.Sxc3#
        • 2.Rxe3#
        • 2.Rb4#
        • 2.Qd3#
        • 2.Qd4#
      • 1...d5
        • 2.Qxe3#
      • 1...cxd2!
    • 1.c7?
      • threat
        • 2.Rb4#
      • 1...Sd4
        • 2.Sxc3#
      • 1...d5
        • 2.Qxe3#
      • 1...Kd5!
  • Keys
    • 1.Re7!
      • 1...Kd5
        • 2.c7#
      • 1...Sxc1
        • 2.Sxc3#
      • 1...Sxf4
        • 2.Sxc3#
      • 1...Rd3
        • 2.Sc7#
      • 1...Sg1
        • 2.Sxc3#
      • 1...Sg3
        • 2.Sxc3#
      • 1...Sd4
        • 2.Sxc3#
      • 1...d5
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,P_SPINR(c),XQ(A)::S(B),XP(b)
    • S(a);N_GUARD,P_SPINR(c)::S(B),XP(b)
    • S(a);N_GUARD,P_SPINR(c),XP(H)::S(B),XP(b)
    • P(h);SBLOCK::QAR1(A),XR(c)
  • Tries
    • Try
      • S(K);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(c),XP(H)::QAB1(A),XR(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(K);
      • Threat
        • QAR1(A),XR(c)
      • Vars
        • K(e);P-FLIGHT,P_SPINR(c),XP(H)::QAB1(A),XR(c)
        • S(a);N_GUARD,P_SPINR(c),XQ(A)::R(L)
      • Refutation
        • R(c);P_SPINS(a)
    • Try
      • R(L);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(L);
      • Threat
        • QAR1(A),XR(c)
      • Vars
        • R(c);P_SPINS(a)::S(K)
      • Refutation
        • P(g);XR(L)
    • Try
      • Q(A);
      • Vars
        • R(c);N_GUARD,P_SPINS(a)::QAB1(A),XR(c)
        • P(h);SBLOCK::QAR1(A),XR(c)
      • Refutation
        • P(b);XQ(A)
    • Try
      • P(J);
      • Threat
        • B(N)+R(L),DCHECK
      • Vars
        • S(a);N_GUARD,P_SPINR(c)::S(B),XP(b)
        • P(h);SBLOCK::QAR1(A),XR(c)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(L);
    • Vars
      • K(e);S_FLIGHT::B(N)+P(J)
      • S(a);N_GUARD,P_SPINR(c),XQ(A)::S(B),XP(b)
      • S(a);N_GUARD,P_SPINR(c),XP(H)::S(B),XP(b)
      • R(c);P_SPINS(a)::R(L)+S(K)
      • S(a);N_GUARD,P_SPINR(c)::S(B),XP(b)
      • P(h);SBLOCK::QAR1(A),XR(c)
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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).