MESON Chess Problem Database

Problem Display
PID: 110514 (8/b1n2K1p/2p2p2/1ppkPQ2/3q1P2/1N3N2/4B3/3R3r w - - 0 1)

Schor, Laszlo

Chess Horizon, 1964-66

8/b1n2K1p/2p2p2/1ppkPQ2/3q1P2/1N3N2/4B3/3R3r

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Rxd2#
    • 1...Qd3
      • 2.Qxd3#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Sbd2?
      • threat
        • 2.Qd7#
      • 1...Qxe5
        • 2.Sf1#
      • 1...Qxd2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#
      • 1...c4!
    • 1.Sfd2?
      • threat
        • 2.Qd7#
      • 1...Qxe5
        • 2.Sf1#
      • 1...Qxd2
        • 2.Rxd2#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#
      • 1...Qxf4!
    • 1.Sg5?
      • threat
        • 2.Qe4#
        • 2.Qd7#
      • 1...Rxd1
        • 2.Qd7#
      • 1...fxe5
        • 2.Qd7#
        • 2.Qxe5#
      • 1...Qd3
        • 2.Qxd3#
        • 2.Qe4#
      • 1...Se6
        • 2.Qe4#
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe4#
        • 2.Qe6#
      • 1...fxg5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qd7#
      • 1...Qxe5
        • 2.Bf1#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATEB::R(A),XQ(b)
    • Q(b);OGATEB::QAR2(G),XQ(b)
    • P(g);OGATE,P_SPINP(g),XP(F)::QAR1(G),XP(g)
  • Tries
    • Try
      • S(C);N_PINQ(b)
      • Threat
        • QAR2(G)
      • Vars
        • Q(b);P_SPINQ(b),XP(F)::R(A)+S(C)
        • Q(b);OGATE,P_SPINQ(b),XS(C)::R(A),XQ(b)
        • S(i);N_GUARD::QAB1(G),XS(i)
        • S(i);N_GUARD::QAB1(G)
      • Refutation
        • P(d);
    • Try
      • S(D);N_PINQ(b)
      • Threat
        • QAR2(G)
      • Vars
        • Q(b);P_SPINQ(b),XP(F)::R(A)+S(D)
        • Q(b);OGATE,P_SPINQ(b),XS(D)::R(A),XQ(b)
        • S(i);N_GUARD::QAB1(G),XS(i)
        • S(i);N_GUARD::QAB1(G)
      • Refutation
        • Q(b);XP(E)
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_SPINQ(b),XR(A)::QAR2(G)
      • Refutation
        • P(g);XS(D)
  • Actual
    • B(B);N_PINQ(b)
    • Threat
      • QAR2(G)
    • Vars
      • Q(b);OGATEB,P_SPINQ(b),XP(F)::R(A)+B(B)
      • Q(b);OGATE,P_SPINQ(b),XB(B)::QAR2(G),XQ(b)
      • S(i);N_GUARD::QAB1(G),XS(i)
      • S(i);N_GUARD::QAB1(G)
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