MESON Chess Problem Database

Problem Display
PID: 57847 (B7/3p4/2pN3R/1N1k2b1/pP5p/5qPn/6QB/1K2R1n1 w - - 0 1)

Hayrabedian, Krikor

Chess Life, 1957

B7/3p4/2pN3R/1N1k2b1/pP5p/5qPn/6QB/1K2R1n1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Qxe4#
  • Tries
    • 1.Qd2+?
      • 1...Qd3+
        • 2.Qxd3#
      • 1...Bxd2!
  • Keys
    • 1.gxh4!
      • threat
        • 2.Re5#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Be3
        • 2.Qa2#
      • 1...Bf4
        • 2.Qg8#
      • 1...Bf6
        • 2.Qg8#
      • 1...Se2
        • 2.Qxf3#
      • 1...Sf4
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,OGATE::QAB1(C),XQ(b)
  • Tries
    • Try
      • Q(C);CHECK,N_PINQ(b)
      • Vars
        • Q(b);CHECK,N_GUARD,P_SPINQ(b)::QAR2(C),XQ(b)
      • Refutation
        • B(g);XQ(C)
  • Actual
    • P(E);XP(e)
    • Threat
      • R1(B)
    • Vars
      • Q(b);CHECK,OGATE::QAB1(C),XQ(b)
      • B(g);::QAB(C)
      • B(g);OGATE::QAB(C)
      • S(a);N_GUARD::QAB(C),XQ(b)
      • S(c);N_GUARD::QAR(C),XB(g)
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