MESON Chess Problem Database

Problem Display
PID: 74724 (2R5/8/4K3/1B6/4pP2/8/1NpkpP2/3N3Q w - - 0 1)

Benko, Pal Charles

3rd HM., Magyar Sakkelet, 1973

2R5/8/4K3/1B6/4pP2/8/1NpkpP2/3N3Q

#2

8 + 4

3310 2345 Chess Problems 1997
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Se3?
      • threat
        • 2.Rxc2#
      • 1...c1Q
        • 2.Qxc1#
      • 1...c1S
        • 2.Rc2#
        • 2.Qxc1#
      • 1...c1B
        • 2.Rc2#
        • 2.Qxc1#
      • 1...c1R
        • 2.Qxc1#
      • 1...e1S!
    • 1.Sc4+?
      • 1...Kd3
        • 2.Rd8#
      • 1...Kc1!
  • Keys
    • 1.Qxe4!
      • 1...Kc1
        • 2.Qxc2#
      • 1...Ke1
        • 2.Qxe2#
      • 1...cxd1Q
        • 2.Qb4#
      • 1...cxd1S
        • 2.Qxe2#
      • 1...cxd1B
        • 2.Qb4#
      • 1...cxd1R
        • 2.Qxe2#
        • 2.Qb4#
      • 1...exd1Q
        • 2.Qe3#
      • 1...exd1S
        • 2.Rxc2#
      • 1...exd1B
        • 2.Qe3#
      • 1...exd1R
        • 2.Rxc2#
        • 2.Qe3#
      • 1...c1Q
        • 2.Qxe2#
      • 1...c1S
        • 2.Qb4#
      • 1...c1B
        • 2.Qxe2#
        • 2.Qb4#
      • 1...c1R
        • 2.Qxe2#
      • 1...e1Q
        • 2.Rxc2#
      • 1...e1S
        • 2.Qe3#
      • 1...e1B
        • 2.Rxc2#
        • 2.Qxc2#
        • 2.Qe3#
      • 1...e1R
        • 2.Rxc2#

Anticipated by 193846(1916)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(H),XP(a)
      • Vars
        • P(a);::QAB1(B),XQ(a)
        • P(a);::QAB1(B),XR(a)
      • Refutation
        • P(c);
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::R(H)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);XP(d)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(B),XP(a)
      • K(b);P_SPINP(c),S_FLIGHT::QAR1(B),XP(c)
      • P(a);XS(A)::QAB(B)
      • P(a);XS(A)::QAR1(B),XP(c)
      • P(c);XS(A)::QAB1(B)
      • P(c);XS(A)::R1(H),XP(a)
      • P(a);::QAR1(B),XP(c)
      • P(a);::QAB(B)
      • P(c);P_PINQ(B)::R1(H),XP(a)
      • P(c);::QAB1(B)
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