MESON Chess Problem Database

Problem Display
PID: 92286 (8/3p4/2pP3R/2K1Rp2/3p1k2/3P3P/4QP2/8 w - - 0 1)

Neukomm, Gyula (Julius) R

Schweizerische Schach., 1921

8/3p4/2pP3R/2K1Rp2/3p1k2/3P3P/4QP2/8

#2

8 + 5

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qd2#
  • Tries
    • 1.Kb4?
      • 1...Kg5
        • 2.Qd2#
      • 1...c5+!
    • 1.Kc4?
      • 1...Kg5
        • 2.Qd2#
      • 1...c5!
    • 1.Kxd4?
      • threat
        • 2.Qe3#
      • 1...Kg5
        • 2.Qd2#
        • 2.Qe3#
      • 1...c5+!
    • 1.Kb6?
      • 1...Kg5
        • 2.Qd2#
      • 1...c5!
    • 1.Re3?
      • 1...dxe3
        • 2.Qxe3#
      • 1...Kg5!
    • 1.Re4+?
      • 1...Kg5
        • 2.Qh5#
      • 1...fxe4!
    • 1.Rd5?
      • 1...Kg5
        • 2.Qd2#
      • 1...cxd5!
    • 1.Rhe6?
      • 1...Kg5
        • 2.Qg4#
      • 1...dxe6!
    • 1.Qd1?
      • 1...Kg5
        • 2.Qc1#
        • 2.Qd2#
      • 1...Kxe5!
    • 1.Qg4+?
      • 1...Kxe5
        • 2.Qxd4#
        • 2.f4#
      • 1...fxg4!
    • 1.Qe1?
      • 1...Kg5
        • 2.Qd2#
        • 2.Qc1#
      • 1...Kf3!
    • 1.Qb2?
      • 1...Kxe5
        • 2.Qxd4#
      • 1...Kg5
        • 2.Qc1#
        • 2.Qd2#
      • 1...Kf3!
    • 1.Qd2+?
      • 1...Kxe5
        • 2.f4#
      • 1...Kf3!
    • 1.Qe4+?
      • 1...Kg5
        • 2.Qh4#
      • 1...fxe4!
    • 1.f3?
      • 1...Kg5
        • 2.Qd2#
      • 1...Kg3!
  • Keys
    • 1.Qf1!
      • 1...Kf3
        • 2.Rxf5#
      • 1...Kxe5
        • 2.f4#
      • 1...Kg5
        • 2.Qc1#

Anticipated by 121319(1900), 189926(1912)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
      • Refutation
        • P(d);CHECK
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
      • Refutation
        • P(d);
    • Try
      • K(E);S_FLIGHT,XP(a)
      • Threat
        • QAB1(A)
      • Refutation
        • P(d);CHECK
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
      • Refutation
        • P(d);
    • Try
      • R(F);
      • Vars
        • P(a);OGATE,XR(F)::QAB1(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(c);XR(F)
    • Try
      • R(F);
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
      • Refutation
        • P(d);XR(F)
    • Try
      • R(H);
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAR1(A)
      • Refutation
        • P(e);XR(H)
    • Try
      • Q(A);
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XR(F)::QAB1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(F)::P(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(c),S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • P(B);
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::R(F),XP(c)
      • K(b);OGATE,S_FLIGHT,XR(F)::P(B)
      • K(b);P_SPINP(c),S_FLIGHT::QAB(A)
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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).