MESON Chess Problem Database

Problem Display
PID: 250400 (7B/2N5/2P5/1P1P1nK1/RNB1k1Pp/1p2P2Q/3R1pp1/1b3rr1 w - - 0 1)

Murashev, Pavel Aleksandrovich

Uralski Problemist, 2009

7B/2N5/2P5/1P1P1nK1/RNB1k1Pp/1p2P2Q/3R1pp1/1b3rr1

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Bd3#
    • 1...Bd3
      • 2.Bxd3#
    • 1...Sxe3
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sd6
      • 2.Rd4#
    • 1...Sh6
      • 2.Rd4#
    • 1...Se7
      • 2.Rd4#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Bd3#
      • 1...Sg3
        • 2.Be2#
      • 1...Sg7!
    • 1.Sd3?
      • threat
        • 2.Sc5#
      • 1...Bxd3
        • 2.Bxd3#
      • 1...Sg7
        • 2.Bxb3#
      • 1...Sg3!
    • 1.Qxg2+?
      • 1...Kxe3
        • 2.Re2#
      • 1...Rxg2!
    • 1.Qh2?
      • threat
        • 2.Qf4#
      • 1...Kxe3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Sg3!
    • 1.gxf5?
      • threat
        • 2.Rd4#
      • 1...Bd3
        • 2.Bxd3#
      • 1...Rd1!
  • Keys
    • 1.Be2!
      • threat
        • 2.Qf3#
      • 1...Sg3
        • 2.Sc2#
      • 1...Sg7
        • 2.Sd3#
      • 1...Sd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::B(F)
    • B(a);N_GUARD::B(F),XB(a)
    • S(i);N_GUARD,XP(B)::R1(A)
    • S(i);N_GUARD::R1(A),XS(i)
    • S(i);N_GUARD::R1(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(D)+B(F),DCHECK
      • Vars
        • S(i);N_GUARD::R(D)+B(F)
      • Refutation
        • S(i);
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • B(a);OGATE,XS(E)::R(D)+B(F),DCHECK,XB(a)
        • S(i);N_GUARD::R(D)+B(F),XP(f)
      • Refutation
        • S(i);
    • Try
      • Q(C);CHECK,XP(e)
      • Vars
        • K(g);P-FLIGHT,S_CUTR(c),XP(B)::R1(A)
      • Refutation
        • R(c);P_PINP(G),XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(g);P-FLIGHT,XP(B)::QAB1(C)
        • K(g);S_FLIGHT::QAR1(C)
      • Refutation
        • S(i);
    • Try
      • P(G);XS(i)
      • Threat
        • R1(A)
      • Vars
        • B(a);N_GUARD::B(F),XB(a)
      • Refutation
        • R(b);
  • Actual
    • B(F);
    • Threat
      • QAB1(C)
    • Vars
      • S(i);N_GUARD::R(D)+S(E)
      • S(i);N_GUARD::R1(A),XS(i)
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