MESON Chess Problem Database

Problem Display
PID: 229243 (8/8/3p4/B1pB1N2/1r6/RPkp4/3n4/2K1Qn2 w - - 0 1)

Toth, Gyula

Magyar Sakkvilag, 1926

8/8/3p4/B1pB1N2/1r6/RPkp4/3n4/2K1Qn2

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sh2
      • 2.Qxd2#
    • 1...Se3
      • 2.Qxd2#
    • 1...Sg3
      • 2.Qxd2#
    • 1...c4
      • 2.bxc4#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Sb5#
        • 2.Qe5#
      • 1...Se3
        • 2.Sb5#
      • 1...Kd4!
    • 1.Bc4?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...d5!
    • 1.Be6?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...c4
        • 2.bxc4#
      • 1...d5!
    • 1.Bf7?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...c4
        • 2.bxc4#
      • 1...d5!
    • 1.Bg8?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...c4
        • 2.bxc4#
      • 1...d5!
    • 1.Ra1?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...c4!
    • 1.Ra2?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...c4!
    • 1.Ra4?
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...c4!
    • 1.Qh4?
      • threat
        • 2.Qf6#
        • 2.Qh8#
      • 1...Sxb3+
        • 2.Rxb3#
      • 1...Sf3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
        • 2.bxc4#
      • 1...Se4!
  • Keys
    • 1.Qf2!
      • 1...Sxb3+
        • 2.Rxb3#
      • 1...Sh2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Qxd2#
      • 1...Sb1
        • 2.Qb2#
      • 1...Sf3
        • 2.Qb2#
      • 1...Sc4
        • 2.bxc4#
      • 1...Se4
        • 2.Qb2#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B),XS(b)
    • P(f);OGATE::R(C)+P(D),XP(f)
  • Tries
    • Try
      • S(G);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(G)
      • Refutation
        • K(c);N_SPINR(e),N_SPINS(b),S_FLIGHT
    • Try
      • B(F);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • P(g);
    • Try
      • B(F);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
        • P(f);OGATE::R(C)+P(D),XP(f)
      • Refutation
        • P(g);
    • Try
      • B(F);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
        • P(f);OGATE::R(C)+P(D),XP(f)
      • Refutation
        • P(g);
    • Try
      • B(F);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
        • P(f);OGATE::R(C)+P(D),XP(f)
      • Refutation
        • P(g);
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • P(f);
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • P(f);
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • P(f);
    • Try
      • Q(B);N_PINS(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK,OGATE,P_SPINS(b),XP(D)::R1(C),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • S(b);
  • Actual
    • Q(B);N_PINS(b)
    • Vars
      • S(b);CHECK,OGATE,P_SPINS(b),XP(D)::R1(C),XS(b)
      • S(a);N_GUARD::QAB1(B),XS(b)
      • S(b);OGATE::QAB1(B)
      • S(b);OGATE::R(C)+P(D),XS(b)
      • P(f);N_GUARD::QAB1(B)
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