MESON Chess Problem Database

Problem Display
PID: 240077 (b1n2r2/NP1p4/2RBN1B1/K2k2r1/1P6/nPp5/4Q3/7q w - - 0 1)

Mosiashvili, Givi

Problemist Ukraini, 2013

b1n2r2/NP1p4/2RBN1B1/K2k2r1/1P6/nPp5/4Q3/7q

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qa1
      • 2.Qe4#
    • 1...Qc1
      • 2.Qe4#
    • 1...Qd1
      • 2.Qe4#
    • 1...Qf1
      • 2.Qe4#
    • 1...Qg1
      • 2.Qe4#
    • 1...Qh2
      • 2.Qe4#
    • 1...Qh3
      • 2.Qe4#
    • 1...Qh5
      • 2.Qe4#
    • 1...Qh6
      • 2.Qe4#
    • 1...Qh7
      • 2.Qe4#
    • 1...Qh8
      • 2.Qe4#
    • 1...Rg1
      • 2.Qe5#
    • 1...Rg2
      • 2.Qe4#
      • 2.Qe5#
    • 1...Rg3
      • 2.Qe5#
    • 1...Rg4
      • 2.Qe5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Rxg6
      • 2.Qe5#
    • 1...Rf3
      • 2.Qe4#
    • 1...Sb1
      • 2.Qc4#
    • 1...Sc2
      • 2.Qc4#
    • 1...Sc4+
      • 2.Qxc4#
      • 2.bxc4#
    • 1...Sb5
      • 2.Qc4#
    • 1...Sxd6
      • 2.Rc5#
    • 1...dxe6
      • 2.Qd3#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Rc5#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Kxc6
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Sxb5
        • 2.Qc4#
      • 1...dxc6
        • 2.Sec7#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qg1
        • 2.Qe4#
      • 1...Re5!
    • 1.Bc5?
      • threat
        • 2.Sc7#
      • 1...Sc4+
        • 2.bxc4#
      • 1...Sxa7
        • 2.Rd6#
      • 1...dxe6
        • 2.Qxe6#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qh2
        • 2.Qe4#
      • 1...Sb5!
  • Keys
    • 1.Be5!
      • threat
        • 2.Sc7#
      • 1...Sc4+
        • 2.bxc4#
      • 1...Rxe5
        • 2.Qd3#
      • 1...Sxa7
        • 2.Rd6#
      • 1...dxe6
        • 2.Rc5#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Sb5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 19
  • Sets
    • Q(a);N_GUARD::QAB1(A),XQ(a)
    • Q(a);N_GUARD::QAB1(A)
    • R(e);N_GUARD::QAR1(A)
    • R(e);N_GUARD::QAR1(A),XR(e)
    • R(e);N_GUARD,XB(H)::QAR1(A)
    • R(i);S_CUTQ(a)::QAB1(A)
    • S(b);N_GUARD::QAB1(A)
    • S(h);SBLOCK,XB(F)::R1(E)
    • P(f);SBLOCK,XS(G)::QAR2(A)
  • Tries
    • Try
      • S(I);
      • Threat
        • R1(E)
      • Vars
        • S(b);CHECK,N_GUARD::QAB1(A),XS(b)
        • K(d);P_PINS(I),S_FLIGHT,XR(E)::PXB(g)=Q
        • S(b);N_GUARD,XS(I)::QAB1(A)
        • P(f);SBLOCK,XR(E)::S(G)
        • Q(a);N_GUARD::QAB1(A),XQ(a)
        • Q(a);N_GUARD::QAB1(A)
      • Refutation
        • R(e);
    • Try
      • B(F);
      • Threat
        • S(G)
      • Vars
        • S(b);CHECK,OGATE::P(B),XS(b)
        • S(h);N_GUARD,XS(I)::R1(E)
        • P(f);OGATE,XS(G)::QAB1(A),XP(f)
        • Q(a);N_GUARD::QAB1(A),XQ(a)
        • Q(a);N_GUARD::QAB1(A)
      • Refutation
        • S(b);
  • Actual
    • B(F);
    • Threat
      • S(G)
    • Vars
      • S(b);CHECK,OGATE::P(B),XS(b)
      • R(e);SBLOCK,XB(F)::QAR2(A)
      • S(h);N_GUARD,XS(I)::R1(E)
      • P(f);SBLOCK,XS(G)::R1(E)
      • Q(a);N_GUARD::QAB1(A),XQ(a)
      • S(b);N_GUARD::QAR2(A),XS(b)
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