MESON Chess Problem Database

Problem Display
PID: 245385 (2qr1rB1/2p3N1/b1p5/5R1P/p2BkPp1/3R1p1n/Q4P2/1nN1K3 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Szachy, 1984

2qr1rB1/2p3N1/b1p5/5R1P/p2BkPp1/3R1p1n/Q4P2/1nN1K3

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qb7
      • 2.Qe6#
    • 1...Qa8
      • 2.Qe6#
    • 1...Qb8
      • 2.Qe6#
    • 1...Rxd4
      • 2.Re3#
    • 1...Rd7
      • 2.Qe6#
    • 1...Sxf4
      • 2.Re5#
  • Tries
    • 1.Se6?
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Bh7#
      • 1...Qxe6
        • 2.Qxe6#
      • 1...Rxf5
        • 2.Re3#
      • 1...Rd5!
    • 1.Qd2?
      • threat
        • 2.Re3#
        • 2.Re5#
        • 2.Qe3#
      • 1...Qxf5
        • 2.Qe3#
      • 1...Rxf5
        • 2.Qe3#
      • 1...Bxd3
        • 2.Qe3#
        • 2.Qxd3#
      • 1...Qe6
        • 2.Re3#
        • 2.Qe3#
      • 1...Rd5
        • 2.Re3#
        • 2.Qe3#
      • 1...Rde8
        • 2.Re3#
        • 2.Qe3#
      • 1...Rfe8
        • 2.Re3#
        • 2.Qe3#
      • 1...Sxd2!
  • Keys
    • 1.Se2!
      • threat
        • 2.Re3#
      • 1...Kxd3
        • 2.Qxb1#
      • 1...Bxd3
        • 2.Re5#
      • 1...fxe2
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(j);N_GUARD::QAR2(C),XQ(j)
    • Q(j);N_GUARD::QAR2(C)
    • R(k);SBLOCK,XB(F)::R1(E)
    • R(k);S_CUTQ(j)::QAR2(C)
    • S(c);SBLOCK,XP(G)::R1(H)
  • Tries
    • Try
      • S(J);
      • Threat
        • R1(H)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(H)::B(K)
        • Q(j);OGATE,XS(J)::QAR2(C),XQ(j)
        • R(l);SBLOCK,XR(H)::R1(E)
      • Refutation
        • R(k);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • Q(j);XR(H)::QAR1(C)
        • R(l);XR(H)::QAR1(C)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • S(A);
    • Threat
      • R1(E)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(E)::QAB(C),XS(a)
      • B(g);SBLOCK,XR(E)::R1(H)
      • P(b);OGATE,XS(A)::QAR2(C),XP(b)
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