MESON Chess Problem Database

Problem Display
PID: 158270 (8/8/4p3/N2kp3/4r3/B1P1R3/4P3/K2N1QqR w - - 0 1)

Giacobbe, Daniele

Scacchi e Scienze Applicate, 2009

8/8/4p3/N2kp3/4r3/B1P1R3/4P3/K2N1QqR

#2

9 + 5

4901 Best Problems 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qxe4#
      • 1...Qxd1+
        • 2.Rxd1#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Qxh1
        • 2.Rd3#
      • 1...Qxg2!
    • 1.c4+?
      • 1...Kd4
        • 2.Rd3#
      • 1...Rxc4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxe4#
      • 1...Qxd1+
        • 2.Rxd1#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Qxh1
        • 2.Rd3#
      • 1...Qg2
        • 2.Rd3#
      • 1...Qg4
        • 2.Rd3#
      • 1...Qg6
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);P_PINR(b),P_SPINS(B)
      • Threat
        • QAB1(C),XR(b)
      • Vars
        • Q(a);CHECK,OGATE,XS(B)::R(D),XQ(a)
        • Q(a);N_PINS(B),XR(H)::S(B),XQ(a)
        • Q(a);N_GUARD,XR(D)::R(H)
      • Refutation
        • Q(a);N_PINS(B),N_SPINR(b),XQ(C)
    • Try
      • P(G);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(H)
      • Refutation
        • R(b);XP(G)
  • Actual
    • Q(C);P_PINR(b),P_SPINS(B)
    • Threat
      • QAB1(C),XR(b)
    • Vars
      • Q(a);CHECK,OGATE,XS(B)::R(D),XQ(a)
      • Q(a);N_PINS(B),XR(H)::S(B),XQ(a)
      • Q(a);N_GUARD,XR(D)::R(H)
      • Q(a);N_GUARD,N_PINS(B)::R(H)
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