MESON Chess Problem Database

Problem Display
PID: 151302 (8/1Q1p1r1p/8/p2R4/RB2rkNK/3pN3/4b3/8 w - - 0 1)

Vasilenko, Anatoly Grigorovich

5th HM., Die Schwalbe, 2013

8/1Q1p1r1p/8/p2R4/RB2rkNK/3pN3/4b3/8

#2

7 + 8

23 Die Schwalbe 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rf5
      • 2.Rxf5#
    • 1...Re7
      • 2.Rf5#
    • 1...Rg7
      • 2.Rf5#
    • 1...Bf3
      • 2.Bd6#
    • 1...d6
      • 2.Qxf7#
  • Tries
    • 1.Rd4?
      • threat
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...Rxd4
        • 2.Bd6#
      • 1...Bf3
        • 2.Bd6#
      • 1...d5
        • 2.Qxf7#
      • 1...Re7!
    • 1.Qc7+?
      • 1...Kf3
        • 2.Qg3#
      • 1...d6
        • 2.Qxf7#
      • 1...Re5!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qxe4#
      • 1...Kf3
        • 2.Qxe4#
      • 1...Rxe3
        • 2.Bd2#
      • 1...Rxb4
        • 2.Sg2#
      • 1...Rxe5
        • 2.Bd6#
      • 1...Rc4
        • 2.Sg2#
      • 1...Rd4
        • 2.Sg2#
      • 1...Bf3
        • 2.Sd5#
      • 1...d5
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(c);OGATEB::R(F),XR(c)
    • R(g);N_GUARD::R1(F),XR(g)
    • R(g);N_GUARD::R1(F)
    • B(a);SBLOCK::B(C)
    • P(f);OGATE::QAR(G),XR(g)
  • Tries
    • Try
      • R(F);P_PINR(c)
      • Threat
        • QAR1(G),XR(c)
      • Vars
        • K(d);P-FLIGHT,P_PINS(D)::QAB1(G),XR(c)
        • R(c);N_SPINR(c),XR(F)::B(C)
        • B(a);SBLOCK::B(C)
        • P(f);OGATE::QAR(G),XR(g)
      • Refutation
        • R(g);
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,P_PINS(D)::QAR1(G)
        • P(f);OGATE,P_SPINP(f)::QAR(G),XR(g)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • R(F);
    • Threat
      • QAR1(G),XR(c)
    • Vars
      • K(d);P-FLIGHT,P_PINS(D),P_SPINR(c)::QAB1(G),XR(c)
      • R(c);OGATEB,XS(A)::R(B)+B(C)
      • R(c);P_SPINR(c),XB(C)::S(A)
      • R(c);OGATEB,XR(F)::R(B)+B(C)
      • R(c);::S(A)
      • B(a);SBLOCK::S(A)
      • P(f);OGATE::QAR(G),XR(g)
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