MESON Chess Problem Database

Problem Display
PID: 276181 (2Q5/2p1qPBK/8/NNpkPp1B/5p2/3b4/1n1RR3/5r2 w - - 0 1)

Vasilenko, Anatoly Grigorovich

Die Schwalbe, 2024

2Q5/2p1qPBK/8/NNpkPp1B/5p2/3b4/1n1RR3/5r2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Qd7#
    • 1...Qg5
      • 2.Qd7#
    • 1...Qxe5
      • 2.Rxe5#
    • 1...Qd7
      • 2.Qxd7#
    • 1...Qxf7
      • 2.Bxf7#
    • 1...Ra1
      • 2.Bf3#
    • 1...Rb1
      • 2.Bf3#
    • 1...Rc1
      • 2.Bf3#
    • 1...Rd1
      • 2.Bf3#
    • 1...Re1
      • 2.Bf3#
    • 1...Rg1
      • 2.Bf3#
    • 1...Rf3
      • 2.Bxf3#
    • 1...Sd1
      • 2.Rxd3#
    • 1...Sa4
      • 2.Rxd3#
    • 1...Sc4
      • 2.Rxd3#
    • 1...c6
      • 2.Qxc6#
  • Tries
    • 1.Qxf5?
      • threat
        • 2.e6#
      • 1...Qxe5
        • 2.Rxe5#
      • 1...Qxf7
        • 2.Bxf7#
      • 1...Qd6
        • 2.exd6#
      • 1...Qf6
        • 2.exf6#
      • 1...Qe6
        • 2.Qe4#
      • 1...Sc4
        • 2.Rxd3#
      • 1...Qg5!
    • 1.Qb7+?
      • 1...c6
        • 2.Qxc6#
      • 1...Ke6!
    • 1.Qa8+?
      • 1...c6
        • 2.Qxc6#
      • 1...Ke6!
  • Keys
    • 1.e6!
      • threat
        • 2.Re5#
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Qd6
        • 2.Sc3#
      • 1...Qf6
        • 2.Qd7#
      • 1...Re1
        • 2.Bf3#
      • 1...Sc4
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 14
  • Sets
    • Q(i);N_GUARD,P_PINB(F)::QAR2(J)
    • Q(i);N_GUARD::QAR2(J)
    • Q(i);OGATE,XP(E)::R1(B),XQ(i)
    • Q(i);N_GUARD::QAR2(J),XQ(i)
    • Q(i);OGATE,P_PINB(H),XP(G)::B(F),XQ(i)
    • R(a);N_GUARD::B(F)
    • R(a);N_GUARD::B(F),XR(a)
    • S(b);N_GUARD::R(A),XB(c)
    • P(h);OGATE::QAB1(J),XP(h)
  • Tries
    • Try
      • Q(J);P_SPINQ(J),XP(g)
      • Threat
        • QAR(J)+P(E)
      • Vars
        • Q(i);OGATE,P_SPINQ(i),XP(E)::R1(B),XQ(i)
        • Q(i);OGATE,P_PINB(H),XP(G)::B(F),XQ(i)
        • Q(i);OGATE::QAR(J)+P(E),XQ(i)
        • Q(i);SBLOCK::QAB1(J)
        • S(b);N_GUARD::R(A),XB(c)
      • Refutation
        • Q(i);
    • Try
      • Q(J);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(J),XP(h)
      • Refutation
        • K(f);N_SPINB(c),S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(J),XP(h)
      • Refutation
        • K(f);N_SPINB(c),S_FLIGHT
  • Actual
    • P(E);
    • Threat
      • R1(B)
    • Vars
      • Q(i);OGATE,XP(E)::QAB1(J),XQ(i)
      • Q(i);SBLOCK::S(D)
      • Q(i);N_GUARD::QAR2(J)
      • R(a);N_GUARD::B(F)
      • S(b);N_GUARD::R(A),XB(c)
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