MESON Chess Problem Database

Problem Display
PID: 99102 (K1R4n/6Q1/p4p2/2p4r/P1k4r/3R2N1/N1pb4/n2B2B1 w - - 0 1)

Ersek, Tibor

Magyar Sakkelet, 1986

K1R4n/6Q1/p4p2/2p4r/P1k4r/3R2N1/N1pb4/n2B2B1

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Be2#
  • Tries
    • 1.Rxc5+?
      • 1...Kxd3
        • 2.Be2#
      • 1...Rxc5!
    • 1.Qxf6?
      • threat
        • 2.Qxa6#
      • 1...Kxd3
        • 2.Be2#
        • 2.Qf1#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bc3
        • 2.Qxc3#
      • 1...a5
        • 2.Qa6#
      • 1...Rh6!
    • 1.Qf7+?
      • 1...Kxd3
        • 2.Be2#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sxf7!
    • 1.Qg8+?
      • 1...Kxd3
        • 2.Be2#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sf7!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qxa6#
      • 1...Kxd3
        • 2.Be2#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Bc3
        • 2.Rxc3#
      • 1...a5
        • 2.Qa6#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(f),OGATEB,S_FLIGHT,XR(D)::B(A)
  • Tries
    • Try
      • R(I);CHECK,XP(f)
      • Vars
        • K(d);S_FLIGHT,XR(D)::B(A)
      • Refutation
        • R(g);XR(I)
    • Try
      • Q(G);XP(i)
      • Threat
        • QAB(G),XP(h)
      • Vars
        • R(e);N_GUARD::QAR1(G),XR(e)
        • B(c);N_GUARD::QAR1(G),XB(c)
        • P(h);::QAB(G)
      • Refutation
        • R(g);
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);N_SPINP(f),S_FLIGHT,XR(D)::B(A)
        • R(g);N_GUARD,P_SPINR(g)::QAB1(G),XR(g)
      • Refutation
        • S(j);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);N_SPINP(f),S_FLIGHT,XR(D)::B(A)
        • R(g);N_GUARD,P_SPINR(g)::QAB1(G),XR(g)
      • Refutation
        • S(j);P_SPINS(j)
  • Actual
    • Q(G);
    • Threat
      • QAB(G),XP(h)
    • Vars
      • K(d);N_SPINP(f),OGATEB,S_FLIGHT,XR(D)::B(A)
      • R(e);N_GUARD::R1(D),XR(e)
      • B(c);N_GUARD::R1(D),XB(c)
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