MESON Chess Problem Database

Problem Display
PID: 155003 (2n5/b4PK1/1B4Qp/3kp3/2r1N3/1NP5/B6R/1n6 w - - 0 1)

Basisty, Mark Borisovich

Vasilenko, Anatoly Grigorovich

Die Schwalbe, 2014

2n5/b4PK1/1B4Qp/3kp3/2r1N3/1NP5/B6R/1n6

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxd4#
    • 1...Rxe4
      • 2.Sd4#
    • 1...Rc5
      • 2.Sbxc5#
    • 1...Rc6
      • 2.Sbc5#
    • 1...Rc7
      • 2.Sbc5#
  • Tries
    • 1.Sbd2?
      • threat
        • 2.Bxc4#
      • 1...Sxd2
        • 2.Rxd2#
      • 1...Sxb6
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa3!
    • 1.Sd4?
      • threat
        • 2.Qc6#
      • 1...exd4
        • 2.Rh5#
      • 1...Sd6
        • 2.Sf6#
      • 1...Se7!
    • 1.Sa5?
      • threat
        • 2.Bxc4#
        • 2.Qc6#
      • 1...Sxb6
        • 2.Qc6#
      • 1...Sd2
        • 2.Rxd2#
        • 2.Qc6#
      • 1...Sa3
        • 2.Rd2#
        • 2.Qc6#
      • 1...Se7
        • 2.Bxc4#
      • 1...Sd6!
    • 1.Sec5?
      • threat
        • 2.Qe6#
      • 1...Rxc5
        • 2.Sxc5#
      • 1...Rg4
        • 2.Sd4#
      • 1...Sd6!
    • 1.Rd2+?
      • 1...Rd4
        • 2.Sa1#
        • 2.Sc1#
        • 2.Sxd4#
        • 2.Sa5#
        • 2.Sbc5#
      • 1...Sxd2!
    • 1.Qc6+?
      • 1...Rxc6
        • 2.Sbc5#
      • 1...Kxc6!
    • 1.f8Q?
      • threat
        • 2.Qff7#
        • 2.Qg8#
      • 1...Rc6
        • 2.Sbc5#
      • 1...Sd6
        • 2.Qfxd6#
      • 1...Se7
        • 2.Qff7#
        • 2.Qd8#
      • 1...Rc7+!
  • Keys
    • 1.Sbc5!
      • threat
        • 2.Qe6#
      • 1...Sxc3
        • 2.Rd2#
      • 1...Sd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(b);::B(A)+S(C),XR(b)
    • R(b);XS(E)::B(A)+S(C)
    • R(b);::B(A)+S(C)
    • R(b);P_PINP(H)::B(A)+S(C)
  • Tries
    • Try
      • S(C);P_PINR(b)
      • Threat
        • B(A),XR(b)
      • Vars
        • S(a);OGATE,XS(C)::R(B),XS(a)
        • S(g);N_GUARD,XB(F)::QAR1(G)
        • S(g);N_GUARD::QAR1(G),XS(g)
      • Refutation
        • S(a);
    • Try
      • S(C);P_PINR(b)
      • Threat
        • QAB1(G)
      • Vars
        • P(d);OGATEB,XS(C)::R(B)
        • S(g);SBLOCK::S(E)
      • Refutation
        • S(g);
    • Try
      • S(C);P_PINR(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XB(F)::QAB1(G)
        • S(g);::B(A),XR(b)
      • Refutation
        • S(g);
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • R(b);XS(E)::B(A)+S(C),XR(b)
        • R(b);P_PINQ(G)::B(A)+S(C)
      • Refutation
        • S(g);
    • Try
      • R(B);CHECK
      • Refutation
        • S(a);XR(B)
    • Try
      • Q(G);CHECK
      • Vars
        • R(b);SBLOCK,XQ(G)::B(A)+S(C)
      • Refutation
        • K(c);S_FLIGHT,XQ(G)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::B(A)+S(C)
        • S(g);N_GUARD::QAR1(H),XS(g)
      • Refutation
        • R(b);CHECK
  • Actual
    • S(C);P_PINR(b)
    • Threat
      • QAB1(G)
    • Vars
      • S(a);N_GUARD,XP(D)::R(B)
      • S(g);N_GUARD::QAR1(G),XS(g)
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