MESON Chess Problem Database

Problem Display
PID: 135788 (8/1P4p1/2KN2r1/p7/p7/kpP1p3/1p1pQ2B/1B2b3 w - - 0 1)

Retter, Yosef

2nd Place, AGM, 2009

8/1P4p1/2KN2r1/p7/p7/kpP1p3/1p1pQ2B/1B2b3

#2

7 + 10

721 Variantim 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sc4#
      • 2.Sb5#
    • 1...Rg2
      • 2.Sc4#
      • 2.Sb5#
    • 1...Rg3
      • 2.Sc4#
      • 2.Sb5#
    • 1...Rg4
      • 2.Sb5#
    • 1...Rg5
      • 2.Sc4#
    • 1...Rxd6+
      • 2.Bxd6#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Sc4#
        • 2.Sb5#
      • 1...Rxd6
        • 2.Bxd6#
      • 1...Rg4
        • 2.Sb5#
      • 1...Rg5
        • 2.Sc4#
      • 1...Bg3!
    • 1.Qc4?
      • threat
        • 2.Qc5#
      • 1...Rxd6+
        • 2.Bxd6#
      • 1...Rg4
        • 2.Sb5#
      • 1...Rg5!
    • 1.Qb5?
      • threat
        • 2.Qc5#
      • 1...Rxd6+
        • 2.Bxd6#
      • 1...Rg5
        • 2.Sc4#
      • 1...Rg4!
    • 1.Qxe3?
      • threat
        • 2.Qc5#
      • 1...Rxd6+
        • 2.Bxd6#
      • 1...Rg4
        • 2.Sb5#
      • 1...Rg5
        • 2.Sc4#
      • 1...Bf2!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qc5#
      • 1...Rxd6+
        • 2.Bxd6#
      • 1...Rg4
        • 2.Sb5#
      • 1...Rg5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(i);N_PINS(F)::S(F)
    • R(i);CHECK,OGATE,XS(F)::B(C),XR(i)
  • Tries
    • Try
      • K(E);N_SPINS(F),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(i);OGATE,XS(F)::B(C),XR(i)
        • R(i);::S(F)
      • Refutation
        • B(a);P_PINS(F)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • R(i);CHECK,OGATE,XS(F)::B(C),XR(i)
        • R(i);N_PINS(F)::S(F)
      • Refutation
        • R(i);N_PINS(F)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • R(i);CHECK,OGATE,XS(F)::B(C),XR(i)
        • R(i);N_PINS(F)::S(F)
      • Refutation
        • R(i);N_PINS(F)
    • Try
      • Q(B);XP(f)
      • Threat
        • QAB(B)
      • Vars
        • R(i);CHECK,OGATE,XS(F)::B(C),XR(i)
        • R(i);N_PINS(F)::S(F)
      • Refutation
        • B(a);
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • R(i);CHECK,OGATE,XS(F)::B(C),XR(i)
      • R(i);N_PINS(F)::S(F)
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