MESON Chess Problem Database

Problem Display
PID: 258813 (8/6p1/6B1/N1Q2pN1/2PP3P/p1k2PBR/p2p1P1P/rn1K4 w - - 0 1)

Handloser, Ralf Chris

Die Schwalbe, 2022

8/6p1/6B1/N1Q2pN1/2PP3P/p1k2PBR/p2p1P1P/rn1K4

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kb2
      • 2.Qb4#
  • Tries
    • 1.Sc6?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kb3
        • 2.Qb4#
      • 1...f4
        • 2.Qb4#
      • 1...Kd3!
    • 1.Bf4?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3!
    • 1.Bd6?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3
        • 2.f4#
      • 1...f4!
    • 1.Bc7?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3
        • 2.f4#
      • 1...f4!
    • 1.Bb8?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3
        • 2.f4#
      • 1...f4!
    • 1.Bxf5?
      • 1...Kb2
        • 2.Qb4#
      • 1...g6!
    • 1.Qxa3+?
      • 1...Kxd4
        • 2.Se6#
        • 2.Qe3#
      • 1...Sxa3+!
    • 1.Qe7?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...f4!
    • 1.Qxf5?
      • 1...Kb2
        • 2.Qc2#
      • 1...Kxd4
        • 2.Qe5#
      • 1...Kb4!
    • 1.f4?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3!
    • 1.d5?
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3
        • 2.Qe3#
      • 1...f4!
  • Keys
    • 1.Be5!
      • 1...Kb2
        • 2.Qb4#
      • 1...Kd3
        • 2.f4#
      • 1...f4
        • 2.d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);N_GUARD,S_FLIGHT::QAR2(K)
  • Tries
    • Try
      • S(J);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
        • K(f);N_GUARD,P-FLIGHT::QAR1(K)
        • P(g);::QAB1(K)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(g)
    • Try
      • B(E);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(g)
    • Try
      • B(E);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
        • K(f);N_GUARD,P-FLIGHT,P_SPINP(g)::R(F)+P(D)
      • Refutation
        • P(g);
    • Try
      • B(E);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
        • K(f);N_GUARD,P-FLIGHT,P_SPINP(g)::R(F)+P(D)
      • Refutation
        • P(g);
    • Try
      • B(E);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
        • K(f);N_GUARD,P-FLIGHT,P_SPINP(g)::R(F)+P(D)
      • Refutation
        • P(g);
    • Try
      • B(M);XP(g)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
      • Refutation
        • P(h);
    • Try
      • Q(K);CHECK,XP(e)
      • Refutation
        • S(b);CHECK,XQ(K)
    • Try
      • Q(K);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
        • K(f);N_GUARD,P-FLIGHT,P_SPINP(g)::QAR1(K)
        • K(f);N_GUARD,S_FLIGHT,XP(H)::QAB1(K)
      • Refutation
        • P(g);
    • Try
      • Q(K);XP(g)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR1(K)
        • K(f);OGATEB,S_FLIGHT,XP(H)::QAB1(K)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
      • Refutation
        • K(f);P-FLIGHT,P_SPINP(g)
    • Try
      • P(H);
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR2(K)
        • K(f);N_GUARD,P-FLIGHT,P_SPINP(g)::QAR1(K)
      • Refutation
        • P(g);
  • Actual
    • B(E);
    • Vars
      • K(f);N_GUARD,S_FLIGHT::QAR2(K)
      • K(f);N_GUARD,P-FLIGHT,P_SPINP(g)::R(F)+P(D)
      • P(g);::B(E)+P(H)
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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).