MESON Chess Problem Database

Problem Display
PID: 96910 (2B5/7R/5N2/4Nr2/7P/5pk1/3P3p/5K1Q w - - 0 1)

Wrobel, Marian

1st Comm., Problem TT, 1959

2B5/7R/5N2/4Nr2/7P/5pk1/3P3p/5K1Q

#2

8 + 4

3310 2345 Chess Problems 1997
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qxf3#
    • 1...Kf4
      • 2.Qxh2#
    • 1...Rg5
      • 2.Qxf3#
  • Tries
    • 1.Seg4?
      • threat
        • 2.Qxh2#
      • 1...Kh3
        • 2.Qxh2#
      • 1...Kf4
        • 2.Qxh2#
      • 1...f2!
    • 1.Se4+?
      • 1...Kh3
        • 2.Bxf5#
        • 2.Qxf3#
      • 1...Kf4!
    • 1.Bxf5?
      • threat
        • 2.Qxf3#
      • 1...f2
        • 2.Qf3#
      • 1...Kf4!
    • 1.Qg2+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Sg6#
        • 2.Qxh2#
      • 1...fxg2+!
  • Keys
    • 1.Sfg4!
      • threat
        • 2.Qxh2#
      • 1...Kh3
        • 2.Qxh2#
      • 1...Kf4
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT,P_SPINP(a),P_SPINR(d)::QAR2(B),XP(b)
    • K(c);S_FLIGHT::QAB(B),XP(a)
    • R(d);N_GUARD::QAR1(B),XP(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
        • K(c);S_FLIGHT::QAB(B),XP(a)
      • Refutation
        • P(b);
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(H);XR(d)
      • Threat
        • QAR1(B),XP(b)
      • Vars
        • P(b);::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • P(b);CHECK,XQ(B)
  • Actual
    • S(F);
    • Threat
      • QAB1(B),XP(a)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
      • K(c);S_FLIGHT::QAR1(B),XP(b)
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