MESON Chess Problem Database

Problem Display
PID: 174881 (K3Rb2/nQ6/4PNp1/1p2pkPP/1q6/5NBP/B3b3/4R3 w - - 0 1)

Markovtsy, Vassyl Yuriovich

2nd Prize, Albrecht-100 MT, 2017

K3Rb2/nQ6/4PNp1/1p2pkPP/1q6/5NBP/B3b3/4R3

#2

12 + 8

23 Die Schwalbe 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Qe4#
    • 1...Qd2
      • 2.Qe4#
    • 1...Qa3
      • 2.Qe4#
    • 1...Qc3
      • 2.Qe4#
    • 1...Qa5
      • 2.Qe4#
    • 1...Qc5
      • 2.Qe4#
    • 1...Qd6
      • 2.Qe4#
    • 1...Qe7
      • 2.Qe4#
    • 1...Qb2
      • 2.Qe4#
    • 1...Qb3
      • 2.Qe4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qg4
      • 2.hxg4#
    • 1...Bd1
      • 2.Rxe5#
    • 1...Bf1
      • 2.Rxe5#
    • 1...Bd3
      • 2.Rxe5#
    • 1...Bxf3
      • 2.Rxe5#
    • 1...Bc4
      • 2.Rxe5#
      • 2.Qe4#
    • 1...e4
      • 2.Qd5#
    • 1...gxh5
      • 2.Qh7#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sh4#
      • 1...Qxe4
        • 2.Rxf8#
      • 1...Bxf3
        • 2.Qf7#
      • 1...Sc6!
    • 1.Bb1+?
      • 1...Qe4
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Bd3
        • 2.Rxe5#
      • 1...e4
        • 2.Qd5#
      • 1...Qxb1!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxg6#
      • 1...Qe4+
        • 2.Sd5#
      • 1...Bxf3+
        • 2.Se4#
      • 1...gxh5
        • 2.Qh7#

There are these versions: 183985

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 15
  • Sets
    • Q(b);N_GUARD,XR(A)::QAB1(J)
    • Q(b);N_GUARD::QAB1(J)
    • Q(b);N_GUARD,P_PINQ(J)::QAB1(J),XQ(b)
    • Q(b);OGATE::P(E),XQ(b)
    • B(a);OGATE::R1(A),XP(d)
    • B(a);OGATE,P_PINQ(J),XS(C)::R1(A),XP(d)
    • P(d);OGATEB::QAR2(J)
    • P(f);OGATEB,XP(G)::QAB(J)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(C)
      • Vars
        • Q(b);N_GUARD,P_PINQ(J),XS(I)::R(L),XB(h)
        • B(a);XS(C)::QAR2(J)
      • Refutation
        • S(g);
    • Try
      • B(B);CHECK
      • Vars
        • B(a);OGATE,P_SPINB(a)::R1(A),XP(d)
        • P(d);P_SPINP(d),S_CUTB(a),S_CUTQ(b),S_CUTQ(b)::QAR2(J)
      • Refutation
        • Q(b);XB(B)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J),XP(f)
    • Vars
      • Q(b);CHECK,SBLOCK::QAR(J)+S(I)
      • B(a);CHECK,XS(C)::QAR(J)+S(I)
      • P(f);OGATEB,XP(G)::QAB(J)
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