MESON Chess Problem Database

Problem Display
PID: 28356 (6r1/4Qp2/4p3/4R2b/R3pPkP/8/4P2K/8 w - - 0 1)

Gross, Erwin

Neue Osnabrucker Zeitung, 1994

6r1/4Qp2/4p3/4R2b/R3pPkP/8/4P2K/8

#2

7 + 6

6114 Problemschach-Jahrbuch (1994) 1995
3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Raxe4#
    • 1...Rg5
      • 2.Qxg5#
    • 1...Ra8
      • 2.Qg5#
    • 1...Rb8
      • 2.Qg5#
    • 1...Rc8
      • 2.Qg5#
    • 1...Rd8
      • 2.Qg5#
    • 1...Re8
      • 2.Qg5#
    • 1...Rf8
      • 2.Qg5#
    • 1...Rh8
      • 2.Qg5#
    • 1...Bg6
      • 2.Qg5#
    • 1...e3
      • 2.f5#
  • Tries
    • 1.Raxe4?
      • threat
        • 2.f5#
      • 1...Bg6
        • 2.Qg5#
      • 1...f5!
    • 1.f5?
      • threat
        • 2.Raxe4#
      • 1...Kf4
        • 2.Raxe4#
      • 1...Bg6
        • 2.Qg5#
      • 1...exf5!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qg3#
      • 1...Kxf4
        • 2.Raxe4#
      • 1...Kxh4
        • 2.Qh3#
      • 1...e3
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(D)::R1(C),XP(a)
    • R(f);N_GUARD::QAR1(G),XR(f)
    • R(f);N_GUARD::QAR1(G)
    • B(c);S_CUTR(f)::QAR1(G)
    • P(a);::R(C)+P(D)
  • Tries
    • Try
      • R(C);XP(a)
      • Threat
        • R(C)+P(D)
      • Vars
        • B(c);S_CUTR(f)::QAR1(G)
      • Refutation
        • P(e);
    • Try
      • P(D);P_PINP(a)
      • Threat
        • R(C),XP(a)
      • Vars
        • K(b);P-FLIGHT::R1(C),XP(a)
        • B(c);S_CUTR(f)::QAR1(G)
      • Refutation
        • P(d);XP(D)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(D)::R1(C),XP(a)
      • K(b);P-FLIGHT,XP(E)::QAR1(G)
      • P(a);::R(C)+P(D)
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