MESON Chess Problem Database

Problem Display
PID: 99604 (8/8/8/1K6/N1p5/pk6/R7/R7 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1926

8/8/8/1K6/N1p5/pk6/R7/R7

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Sc5#
  • Tries
    • 1.Kc5?
      • 1...Kxa4
        • 2.Rxa3#
      • 1...c3!
    • 1.Rc2?
      • threat
        • 2.Rc3#
      • 1...c3
        • 2.Rxc3#
      • 1...Kxc2!
  • Keys
    • 1.Rb1+!
      • 1...Kxa2
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK::S(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XS(C)::R1(B),XP(a)
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • P(c);::R1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • R(A);CHECK
    • Vars
      • K(b);S_FLIGHT,XR(B)::S(C)
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