MESON Chess Problem Database

Problem Display
PID: 258138 (3RN3/1N2p3/B1k1p3/Bp1p2r1/2q1Pn2/2RQ2p1/8/2bK4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Astafyeva-30 JT (Kudesnik), 2021

3RN3/1N2p3/B1k1p3/Bp1p2r1/2q1Pn2/2RQ2p1/8/2bK4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Qxb5#
      • 2.Qxc3#
    • 1...Qc5
      • 2.Rxc5#
      • 2.Qxb5#
    • 1...dxe4
      • 2.Rc8#
      • 2.Qd7#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Rc8#
      • 1...exf6
        • 2.Rd6#
      • 1...Rg8!
    • 1.Rxc4+?
      • 1...dxc4
        • 2.Rc8#
        • 2.Qd7#
      • 1...bxc4!
    • 1.Qd4?
      • threat
        • 2.Qb6#
      • 1...Qc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Be3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rc8#
      • 1...Qb3+
        • 2.Sxb3#
      • 1...Qxd3+
        • 2.Sxd3#
      • 1...Qa4+
        • 2.Sxa4#
      • 1...Kxc5
        • 2.Rc8#
      • 1...Qxc5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);
      • Threat
        • R(H)
      • Vars
        • P(j);N_GUARD,XS(I)::R1(H)
      • Refutation
        • R(g);
    • Try
      • R(B);CHECK,XQ(c)
      • Refutation
        • P(e);XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • B(a);
  • Actual
    • S(G);N_PINQ(c)
    • Threat
      • R(H)
    • Vars
      • Q(c);CHECK::R(B)+S(G),XQ(c)
      • Q(c);CHECK,XQ(C)::R(B)+S(G),XQ(c)
      • K(h);P-FLIGHT,P_SPINQ(c),XS(G)::R(H)
      • Q(c);OGATE,P_SPINQ(c),XS(G)::QAB1(C),XP(e)
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