MESON Chess Problem Database

Problem Display
PID: 135828 (6Q1/7P/1p1p4/1K1R4/1BNP1p2/PP3B2/rrk5/nb1R4 w - - 0 1)

Hirschenson, Aaron

6th Place, Liga Problemista, 2009/1

6Q1/7P/1p1p4/1K1R4/1BNP1p2/PP3B2/rrk5/nb1R4

#2

11 + 8

273 Mat Plus 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Qg2#
    • 1...Sxb3
      • 2.Qg6#
  • Tries
    • 1.Ka4?
      • threat
        • 2.Qg2#
        • 2.Qg6#
      • 1...Rxa3+
        • 2.Sxa3#
      • 1...Rxb3
        • 2.Qg2#
      • 1...Sxb3
        • 2.Qg6#
      • 1...b5+!
    • 1.Se3+?
      • 1...Kxb3
        • 2.Rxd6#
      • 1...fxe3!
    • 1.Sa5?
      • threat
        • 2.Qg2#
        • 2.Qg6#
        • 2.Qc8#
      • 1...Rxb3
        • 2.Qg2#
      • 1...Sxb3
        • 2.Qg6#
      • 1...bxa5!
    • 1.Sxd6?
      • 1...Kxb3
        • 2.Rc5#
      • 1...Rxb3
        • 2.Qg2#
      • 1...Sxb3
        • 2.Qg6#
      • 1...Rxa3!
    • 1.Rc1+?
      • 1...Kxb3
        • 2.Rc3#
      • 1...Kd3
        • 2.Rc3#
        • 2.Qg6#
      • 1...Kxc1!
    • 1.Rd2+?
      • 1...Kc1
        • 2.Qg1#
      • 1...Kxb3!
  • Keys
    • 1.Rxd6!
      • 1...Kxb3
        • 2.Se3#
      • 1...Rxa3
        • 2.Sxa3#
      • 1...Rxb3
        • 2.Qg2#
      • 1...Sxb3
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);P_PINB(E),SBLOCK,XP(C)::QAR(K)
    • S(a);SBLOCK,XP(C)::QAB(K)
  • Tries
    • Try
      • K(H);P_SPINP(B),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK,XP(B)::S(F),XR(c)
        • R(d);XP(C)::QAR(K)
        • S(a);XP(C)::QAB(K)
      • Refutation
        • P(g);CHECK
    • Try
      • S(F);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(C)::QAB(K)+R(I),XP(h)
      • Refutation
        • P(f);XS(F)
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(d);P_PINB(E),XP(C)::QAR(K)
        • S(a);XP(C)::QAB(K)
      • Refutation
        • P(g);XS(F)
    • Try
      • S(F);XP(h)
      • Vars
        • K(e);S_FLIGHT,XP(C)::QAB(K)+R(I)
        • R(d);P_PINB(E),SBLOCK,XP(C)::QAR(K)
        • S(a);SBLOCK,XP(C)::QAB(K)
      • Refutation
        • R(c);XP(B)
    • Try
      • R(A);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT,XP(C)::R1(A)
      • Refutation
        • K(e);P-FLIGHT,XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(K)
      • Refutation
        • K(e);S_FLIGHT,XP(C)
  • Actual
    • R(I);XP(h)
    • Vars
      • K(e);S_FLIGHT,XP(C)::QAB(K)+S(F)
      • R(c);XP(B)::S(F),XR(c)
      • R(d);P_PINB(E),SBLOCK,XP(C)::QAR(K)
      • S(a);SBLOCK,XP(C)::QAB(K)
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